:Windows RT

At the 2011 Consumer Electronics Show, it was officially announced that the next version of Windows would provide support for system-on-chip (SoC) implementations based on the ARM architecture. Steven Sinofsky, then Windows division president, demonstrated an early version of a Windows port for the architecture, codenamed Windows on ARM (WoA), running on prototypes with Qualcomm Snapdragon, Texas Instruments OMAP, and Nvidia Tegra 2 chips. The prototypes featured working versions of Internet Explorer 9 (with DirectX support via the Tegra 2's GPU), PowerPoint and Word, along with the use of class drivers to allow printing to an Epson printer. Sinofsky felt that the shift towards SoC designs were "a natural evolution of hardware that's applicable to a wide range of form factors, not just to slates", while Microsoft CEO Steve Ballmer emphasized the importance of supporting SoCs on Windows by proclaiming that the operating system would "be everywhere on every kind of device without compromise."{{cite web|url=https://www.zdnet.com/article/ces-windows-to-run-on-arm-chips-says-microsoft/|title=CES: Windows to run on ARM chips, says Microsoft|last=Bisson|first=Simon|date=January 6, 2011|work=ZDNet|publisher=CBS Interactive|access-date=November 21, 2012}}

Initial development on WoA took place by porting code from Windows 7; Windows Mobile smartphones were used to test early builds of WoA because of lack of readily available ARM-based tablets. Later testing was performed using a custom-designed array of rack-mounted ARM-based systems. Changes to the Windows codebase were made to optimize the OS for the internal hardware of ARM devices, but a number of technical standards traditionally used by x86 systems are also used. WoA devices would use UEFI firmware and have a software-based Trusted Platform Module to support device encryption and UEFI Secure Boot.{{cite web|url=https://www.computerworld.com/article/2501405/windows-8-on-arm--you-can-look-but-you-can-t-touch.html|title=Windows 8 on ARM: You can look but you can't touch|last=Niccolai|first=James|date=January 13, 2012|work=Computerworld|publisher=IDG|access-date=January 27, 2012|archive-date=March 6, 2019|archive-url=https://web.archive.org/web/20190306143348/https://www.computerworld.com/article/2501405/windows-8-on-arm--you-can-look-but-you-can-t-touch.html|url-status=dead}} ACPI is also used to detect and control plug and play devices and provide power management outside the SoC. To enable wider hardware support, peripherals such as human interface devices, storage and other components that use USB and I²C connections use class drivers and standardized protocols. Windows Update serves as the mechanism for updating all system drivers, software, and firmware.{{cite web|url=https://blogs.msdn.com/b/b8/archive/2012/02/09/building-windows-for-the-arm-processor-architecture.aspx|title=Building Windows for the ARM processor architecture|last=Sinofsky|first=Steven|date=February 9, 2012|work=Building Windows 8|publisher=Microsoft|access-date=November 21, 2012}}

Microsoft showcased other aspects of the new operating system, to be known as Windows 8, during subsequent presentations. Among these changes (which also included an overhauled interface optimized for use on touch-based devices built around Metro design language) was the introduction of Windows Runtime (WinRT). Software developed using this new architecture could be processor-independent (allowing compatibility with both x86- and ARM-based systems), would emphasize the use of touch input, would run within a sandboxed environment to provide additional security, and be distributed through Windows Store—a store similar to services such as the App Store and Google Play. WinRT was also optimized to provide a more "reliable" experience on ARM-based devices; as such, backward compatibility for Win32 software otherwise compatible with older versions of Windows was intentionally excluded from Windows on ARM. Windows developers indicated that existing Windows applications were not specifically optimized for reliability and energy efficiency on the ARM architecture and that WinRT was sufficient for providing "full expressive power" for applications, "while avoiding the traps and pitfalls that can potentially reduce the overall experience for consumers." Consequentially, this lack of backward compatibility would also prevent existing malware from running on the operating system.{{cite web|url=https://www.theverge.com/2012/5/17/3026590/microsoft-windows-8-developers-windows-store-sandboxing|title=Microsoft talks Windows Store features, Metro app sandboxing for Windows 8 developers|last=Ziegler|first=Chris|date=May 17, 2012|work=The Verge|publisher=Vox Media|access-date=September 8, 2012}}

On April 16, 2012, Microsoft announced that Windows on ARM would be officially branded as Windows RT.{{cite web|url=http://blogs.windows.com/bloggingwindows/2012/04/16/announcing-the-windows-8-editions/|title=Announcing the Windows 8 Editions|last=LeBlanc|first=Brandon|date=April 16, 2012|work=Blogging Windows|publisher=Microsoft|url-status=dead|archive-url=https://web.archive.org/web/20140802140736/https://blogs.windows.com/bloggingwindows/2012/04/16/announcing-the-windows-8-editions/|archive-date=August 2, 2014|access-date=April 17, 2012}} Microsoft did not explicitly indicate what the "RT" in the operating system's name referred to, but it was believed to refer to the WinRT architecture.{{cite web|last=Gara|first=Tom|title=What Does the 'RT' In Windows RT Stand For?|url=https://blogs.wsj.com/corporate-intelligence/2012/10/26/what-does-the-rt-in-windows-rt-stand-for-nothing-andor-something/|work=Wall Street Journal|date=October 26, 2012|access-date=July 10, 2013}} Steven Sinofsky stated that Microsoft would ensure the differences between Windows RT and 8 were adequately addressed in advertising. However, reports found that promotional web pages for the Microsoft Surface tablet had contained confusing wording alluding to the compatibility differences and that Microsoft Store representatives were providing inconsistent and sometimes incorrect information about Windows RT. In response, Microsoft stated that Microsoft Store staff members would be given an average of 15 hours of training prior to the launch of Windows 8 and Windows RT to ensure that consumers were able to make the correct choice for their needs.{{cite web|url=https://www.theverge.com/2012/10/17/3514556/windows-8-vs-windows-rt-surface-confused-microsoft-store-employees|title=With Surface looming, Microsoft fails to explain Windows 8 vs. Windows RT to consumers|last=Hollister|first=Sean|date=October 17, 2012|work=The Verge|publisher=Vox Media|access-date=November 19, 2012}} The first Windows RT devices were officially released alongside Windows 8 on October 26, 2012.{{cite web|url=https://www.cnet.com/news/microsoft-come-celebrate-windows-8-on-oct-25/|title=Microsoft: Come 'celebrate' Windows 8 on Oct 25|last=Reisinger|first=Don|date=September 17, 2012|work=CNET|publisher=CBS Interactive|access-date=September 17, 2012}}

Windows 8.1, an upgrade for Windows 8 and RT, was released in Windows Store on October 17, 2013, containing a number of improvements to the operating system's interface and functionality. For Windows RT devices, the update also adds Outlook to the included Office RT suite.{{cite web|url=http://blogs.windows.com/windows/b/bloggingwindows/archive/2013/08/14/mark-your-calendars-for-windows-8-1.aspx|title=Mark your calendars for Windows 8.1!|publisher=Microsoft|work=Blogging Windows|access-date=August 14, 2013|last=LeBlanc|first=Brandon|archive-date=August 15, 2013|archive-url=https://web.archive.org/web/20130815234725/http://blogs.windows.com/windows/b/bloggingwindows/archive/2013/08/14/mark-your-calendars-for-windows-8-1.aspx|url-status=dead}}{{cite news|url=https://money.cnn.com/2013/08/14/technology/enterprise/windows-8-1-update/index.html|title=Windows 8.1 update coming October 18|last=Covert|first=Adrian|date=August 14, 2013|work=CNN Money|publisher=Time Warner}}{{cite web|url=http://blogs.windows.com/windows/b/bloggingwindows/archive/2013/05/14/windows-keeps-getting-better.aspx|title=Windows Keeps Getting Better|last=LeBlanc|first=Brandon|date=May 14, 2013|website=Blogging Windows|publisher=Microsoft|url-status=dead|archive-url=https://web.archive.org/web/20130515142421/http://blogs.windows.com/windows/b/bloggingwindows/archive/2013/05/14/windows-keeps-getting-better.aspx|archive-date=May 15, 2013|access-date=May 20, 2013}}{{cite web|url=https://www.extremetech.com/computing/159838-windows-rt-8-1-still-slow-still-plagued-by-the-desktop-still-useless|title=Windows RT 8.1: Still slow, still plagued by the Desktop, still useless|last=Anthony|first=Sebastian|date=June 27, 2013|work=ExtremeTech|publisher=Ziff Davis|access-date=July 9, 2013}}{{cite web|url=https://www.cnet.com/news/outlook-finally-coming-to-windows-rt-tablets/|title=Outlook finally coming to Windows RT tablets|last=Greene|first=Jay|date=June 5, 2013|work=CNET|publisher=CBS Interactive|access-date=June 5, 2013}} The update was temporarily recalled by Microsoft shortly after its release, following reports that some Surface users had encountered a rare bug which corrupted their device's Boot Configuration Data during installation, resulting in an error on startup.{{cite web|url=https://www.theverge.com/2013/10/19/4855660/windows-rt-8-1-update-taken-offline-due-to-installation-issues|title=Windows RT 8.1 update taken offline due to installation issues|last=D'Orazio|first=Dante|date=October 19, 2013|work=The Verge|publisher=Vox Media|access-date=October 19, 2013}}{{cite web|url=https://www.pcworld.com/article/2056283/microsoft-temporarily-pulls-windows-rt-8-1-update-due-to-a-situation.html|title=Microsoft temporarily pulls Windows RT 8.1 update due to 'a situation'|last=Chacos|first=Brad|date=October 19, 2013|work=PC World|access-date=October 20, 2013}} On October 21, 2013, Microsoft released recovery media and instructions which could be used to repair the device and restored access to Windows 8.1 the next day.{{cite web|url=https://www.pcworld.com/article/2056295/microsoft-releases-fix-for-surface-rt-slates-borked-by-windows-rt-8-1-update.html|title=Microsoft releases fix for Surface RT slates borked by Windows RT 8.1 update|last=Newman|first=Jared|date=October 19, 2013|work=PC World|access-date=October 22, 2013}}{{cite web|url=https://www.pcworld.com/article/2056548/microsoft-fixes-windows-rt-8-1-issues-returns-update-to-windows-store.html|title=Microsoft fixes Windows RT 8.1 issues, returns update to Windows Store|last=Chacos|first=Brad|date=October 22, 2013|work=PC World|access-date=October 22, 2013}}

{{Further|Windows 8#Features|Features new to Windows 8}}

While Windows RT functions similarly to Windows 8, there are still some notable differences, primarily involving software and hardware compatibility. Julie Larson-Green, then executive vice president of the Devices and Studios group at Microsoft, explained that Windows RT was ultimately designed to provide a "closed, turnkey" user experience, "where it doesn't have all the flexibility of Windows, but it has the power of Office and then all the new style applications. So you could give it to your kid and he's not going to load it up with a bunch of toolbars accidentally out of Internet Explorer and then come to you later and say, 'why am I getting all these pop-ups?' It just isn't capable of doing that by design."

{{Main|Office 2013#Office RT}}

Windows RT does not include Windows Media Player, in favor of other multimedia apps found on Windows Store; devices are pre-loaded with the in-house Xbox Music and Xbox Video apps.

All Windows RT devices include Office 2013 Home & Student RT—a version of Microsoft Office that is optimized for ARM systems.{{cite web|url=http://www.pcpro.co.uk/news/376276/windows-rt-wont-get-full-office-2013|title=Windows RT won't get full Office 2013|publisher=PC Pro|date=August 8, 2012|access-date=October 5, 2012|archive-date=November 4, 2012|archive-url=https://web.archive.org/web/20121104181415/http://www.pcpro.co.uk/news/376276/windows-rt-wont-get-full-office-2013|url-status=dead}} As the version of Office RT included on Windows RT devices is based on the Home & Student version, it cannot be used for "commercial, nonprofit, or revenue-generating activities" unless the organization has a volume license for Office 2013, or the user has an Office 365 subscription with commercial use rights.{{cite web|title=Microsoft Office for Windows RT: How to move to a commercial-use license|url=https://www.zdnet.com/article/microsoft-office-for-windows-rt-how-to-move-to-a-commercial-use-license/|publisher=ZDNet|access-date=October 27, 2012}} For compatibility and security reasons, certain advanced features, such as Visual Basic macros, are not available in Office RT.

Windows RT also includes a BitLocker-based device encryption system, which passively encrypts a user's data once they sign in with a Microsoft account.{{cite web|title=Windows 8.1 includes seamless, automatic disk encryption—if your PC supports it|url=https://arstechnica.com/information-technology/2013/10/windows-8-1-includes-seamless-automatic-disk-encryption-if-your-pc-supports-it/|work=Ars Technica|date=October 17, 2013|access-date=October 18, 2013}}

Due to the different architecture of ARM-based devices compared to x86 devices, Windows RT has software compatibility limitations. Although the operating system still provides the traditional Windows desktop environment alongside Windows 8's touch-oriented user interface, the only desktop applications officially supported by Windows RT are those that come with the operating system itself; such as File Explorer, Internet Explorer, and Office RT. Only Windows Store apps can be installed by users on Windows RT devices; they must be obtained from Windows Store or sideloaded in enterprise environments. Developers cannot port desktop applications to run on Windows RT since Microsoft developers felt that they would not be properly optimized for the platform.{{cite web|url=https://www.cnet.com/news/microsoft-bans-firefox-on-arm-based-windows-mozilla-says/|title=Microsoft bans Firefox on ARM-based Windows, Mozilla says|last=Shankland|first=Stephen|date=May 9, 2012|publisher=CNET|access-date=October 22, 2012}} As a consequence, Windows RT also does not support "new-experience enabled" web browsers: a special class of app used on Windows 8 that allows web browsers to bundle variants that can run in the Windows RT "modern-style user interface" and integrate with other apps but still use Win32 code like desktop programs.{{cite web|title=Developing a new experience enabled desktop browser|url=http://go.microsoft.com/fwlink/p/?linkid=243079|publisher=Microsoft|access-date=November 15, 2012|date=October 22, 2012}}{{cite web|title=Windows 8 browsers: the only Metro apps to get desktop power|date=March 27, 2012|url=http://www.techradar.com/news/software/operating-systems/windows-8-browsers-the-only-metro-apps-to-get-desktop-power-1073930|publisher=TechRadar|access-date=November 13, 2012}}

In a presentation at Windows 8's launch event in New York City, Steven Sinofsky claimed that Windows RT would support 420 million existing hardware devices and peripherals. However, in comparison to Windows 8, full functionality will not be available for all devices, and some devices will not be supported at all.{{cite web|title=Which peripherals work with Windows RT, Surface RT?|url=https://www.zdnet.com/article/which-peripherals-work-with-windows-rt-surface-rt/|publisher=ZDNet|access-date=May 4, 2013}} Microsoft provides a "Compatibility Center" portal where users can search for compatibility information on devices with Windows RT; on launch, the site listed just over 30,000 devices that were compatible with the operating system.{{cite web|title=Windows RT hardware compatibility list released by Microsoft|date=November 2012|url=http://www.techradar.com/news/mobile-computing/tablets/windows-rt-hardware-compatibility-list-released-by-microsoft-1109143|publisher=TechRadar|access-date=May 4, 2013}}

While Windows RT devices can join a HomeGroup and access files stored within shared folders and libraries on other devices within the group, files cannot be shared from the Windows RT device itself.{{cite web|title=If you're asking, 'why does Windows RT do it like that?' The answer's battery life|url=https://www.zdnet.com/article/if-youre-asking-why-does-windows-rt-do-it-like-that-the-answers-battery-life/|work=ZDNet|access-date=December 31, 2013}} Windows RT does not support connecting to a domain for network logins, nor does it support using Group Policy for device management. However, Exchange ActiveSync, the Windows Intune service, or System Center Configuration Manager 2012 SP1 can be used to provide some control over Windows RT devices in enterprise environments, such as the ability to apply security policies and provide a portal which can be used to sideload apps from outside Windows Store.{{cite web|title=Windows RT vs Windows 8: On the Surface, there's still a lot of confusion|date=October 24, 2012|url=http://www.infoworld.com/d/microsoft-windows/microsoft-surface-and-group-policy-dont-mix-now-what-205435|publisher=ZDNet|access-date=November 19, 2012}}

After installation of the KB3033055 update for Windows RT 8.1, a desktop Start menu becomes available as an alternative to the Start screen. It is divided into two columns, with one devoted to recent and pinned applications, and one devoted to live tiles.{{cite web|url=https://support.microsoft.com/en-us/kb/3033055|title=Update for Windows RT 8.1 feature improvement|publisher=Microsoft|access-date=September 20, 2015}}{{cite web|url=https://arstechnica.com/gadgets/2015/09/windows-rt-gets-a-start-menu-of-its-own-in-windows-rt-8-1-update-3/|title=Windows RT gets a Start menu of its own in Windows RT 8.1 Update 3|website=Ars Technica|date=September 16, 2015|publisher=Conde Nast|access-date=September 16, 2015}} It is similar to, but not identical to, Windows 10's version.

Windows RT follows the lifecycle policy of Windows 8 and Windows 8.1. The original Surface tablet fell under Microsoft's support policies for consumer hardware and received mainstream support until April 11, 2017.{{cite web|url=https://www.zdnet.com/article/microsoft-commits-to-surface-with-windows-rt-for-at-least-four-years/|title=Microsoft commits to Surface with Windows RT for at least four years|publisher=CBS Interactive|work=ZDNet|date=November 24, 2012|access-date=May 20, 2013|first=Ed|last=Bott}}

Mainstream support for Windows RT (8.0) ended on January 12, 2016. Users must have updated to Windows RT 8.1 which continued receiving support until the dates mentioned below.

Mainstream support for Windows RT 8.1 ended on January 9, 2018, and extended support for Windows RT 8.1 ended on January 10, 2023.

File:Surface RT.jpg was created as a first-party device for Windows RT.]]

Microsoft imposed tight control on the development and production of Windows RT devices: they were designed in cooperation with the company, and built to strict design and hardware specifications, including requirements to only use "approved" models of certain components. To ensure hardware quality and control the number of devices released upon launch, the three participating ARM chip makers were only allowed to partner with up to two PC manufacturers to develop the first "wave" of Windows RT devices in Microsoft's development program. Qualcomm partnered with Samsung and HP, Nvidia with Asus and Lenovo, and Texas Instruments with Toshiba. Additionally, Microsoft partnered with Nvidia to produce Surface (retroactively renamed "Surface RT") – the first Windows-based computing device to be manufactured and marketed directly by Microsoft.{{cite web|last=Tibken|first=Shara|title=How Microsoft became a control freak with tablet makers|url=http://news.cnet.com/8301-10805_3-57561849-75/how-microsoft-became-a-control-freak-with-tablet-makers/|publisher=CNET|access-date=January 11, 2013}}{{cite web|last=Epstein|first=Zach|url=http://www.bgr.com/2012/06/20/microsoft-surface-tablet-ploy-acer-stan-shih/|title=Microsoft's tablet efforts are fleeting, says Acer founder.|work=Boy Genius Report|date=June 20, 2012}}{{cite web|url=https://www.engadget.com/2012/06/18/microsoft-tablet-announced/|title=Microsoft reveals its own Windows 8 tablet: meet the new Surface for Windows RT|date=June 18, 2012 |publisher=Engadget|access-date=June 20, 2012}} Windows RT was designed to support chips meeting the ARMv7 architecture, a 32-bit processor platform. Shortly after the original release of Windows RT, ARM Holdings disclosed that it was working with Microsoft and other software partners on supporting 64-bit AArch64.{{cite web|title=ARM, Microsoft collaborating on 64-bit Windows version|url=http://www.pcworld.com/article/2013405/arm-microsoft-collaborating-on-64bit-windows-version.html|work=PC World|access-date=October 28, 2013}}

Multiple hardware partners pulled out of the program during the development of Windows RT, the first being Toshiba and Texas Instruments. TI later announced that it was pulling out of the consumer market for ARM system-on-chips to focus on embedded systems.{{Cite news|url=https://www.zdnet.com/article/how-tis-move-out-of-smartphones-into-servers-highlights-chip-issues/|title=How TI's move out of smartphones into servers highlights chip issues|last=Branscombe|first=Mary|date=2012-11-16|work=ZDNet|access-date=2018-04-09|language=en}} HP also pulled out of the program, believing that Intel-based tablets were more appropriate for business use than ARM. HP was replaced by Dell as an alternate Qualcomm partner.{{Cite news|url=https://tablet-news.com/dell-could-replace-hp-as-windows-rt-tablet-maker/|title=Dell Could Replace HP As Windows RT Tablet Maker - Tablet News|last=Iorga|first=Radu|date=2012-07-26|work=Tablet News|access-date=2018-04-09|language=en-US}} Acer also intended to release a Windows RT device alongside its Windows 8-based products, but initially decided to delay it until the second quarter of 2013 in response to the mixed reaction to Surface.{{cite news|title=Acer delays Windows RT tablets over Surface concerns|url=https://www.bbc.co.uk/news/technology-20156061|work=BBC News|date=October 31, 2012|access-date=January 11, 2013}} The unveiling of the Microsoft-developed tablet caught Acer by surprise, leading to concerns that Surface could leave "a huge negative impact for the [Windows] ecosystem and other brands."

The first wave of Windows RT devices included:

• Microsoft Surface (released October 26, 2012, concurrently with general availability of Windows 8){{cite web|url=http://www.eurogamer.net/articles/2012-07-30-microsofts-new-ipad-rival-surface-for-windows-rt-release-date|title=Microsoft's new iPad rival Surface for Windows RT release date|date=July 30, 2012|publisher=Eurogamer|access-date=July 30, 2012}}
• Asus VivoTab RT (released October 26, 2012){{cite web|url=http://eee.asus.com/en/vivo-tab/features/|title=Asus Vivo Tab Official Site|access-date=August 29, 2012|archive-date=October 14, 2012|archive-url=https://web.archive.org/web/20121014215658/http://eee.asus.com/en/vivo-tab/features/|url-status=dead}}{{cite web|last=Wollman|first=Dana|url=https://www.engadget.com/2012/10/23/asus-vivotab-rt-pricing-availability/|title=ASUS VivoTab RT tablet arrives October 26th, starting at $599 for the 32GB model; keyboard dock included (update: eyes-on!)|work=Engadget|date=October 23, 2012|access-date=January 8, 2013}}
• Dell XPS 10 (released December 2012; discontinued on September 25, 2013){{cite web|url=https://www.engadget.com/2012/08/30/dell-xps-10-xps-12-duo/|title=Dell announces XPS 10 Windows 8 hybrid, XPS Duo 12 convertible (update: hands-on)|date=August 30, 2012 |access-date=September 2, 2012}}{{cite web|title=Dell no longer selling its XPS 10 Windows RT tablet, wants you to buy the Latitude 10 instead (updated)|url=https://www.engadget.com/2013/09/25/dell-no-longer-selling-its-xps-10-windows-rt-tablet/|work=Engadget|date=September 25, 2013 |access-date=September 27, 2013}}
• Lenovo IdeaPad Yoga 11 (released December 2012){{cite web|title=Lenovo's backflipping 13-inch IdeaPad Yoga will cost $1,099, 11-inch Windows RT version arrives December for $799 (hands-on)|date=October 9, 2012|url=https://www.theverge.com/2012/10/9/3476938/lenovo-ideapad-yoga-11-yoga-13-price-release-date|publisher=The Verge|access-date=January 27, 2013}}
• Samsung Ativ Tab (Released in United Kingdom on December 14, 2012; American and German releases cancelled){{cite web|url=http://www.slashgear.com/samsung-ativ-tab-10-1-windows-rt-tablet-announced-29244569/|title=Samsung ATIV Tab 10.1 Windows RT tablet announced|date=August 29, 2012|access-date=August 29, 2012}}{{cite web|title=Samsung ATIV S and ATIV Tab available in the UK tomorrow|date=December 13, 2012|url=http://hexus.net/mobile/news/windows-phone/49293-samsung-ativ-s-ativ-tab-available-uk-tomorrow/|publisher=Hexus|access-date=January 17, 2013}}{{cite web|url=https://www.engadget.com/2013/03/06/samsung-windows-rt-ativ-tab-germany/|title=Samsung will stop sale of Windows RT tablets in Germany due to weak demand, according to reports|last=Sakr|first=Sharif|date=March 6, 2013|website=Engadget|access-date=March 13, 2013}}

After having planned to produce a Windows RT device close to its launch, Acer's president Jim Wong later indicated that there was "no value" in the current version of the operating system, and would reconsider its plans for future Windows RT products when the Windows 8.1 update was released.{{cite web|title=Acer waits for Windows RT 8.1 to make tablet decision|date=May 3, 2013|url=http://www.infoworld.com/d/mobile-technology/acer-waits-windows-rt-81-make-tablet-decision-217914|publisher=InfoWorld|access-date=May 4, 2013}} On August 9, 2013, Asus announced that it would no longer produce any Windows RT products; chairman Johnny Shih expressed displeasure at the market performance of Windows RT, considering it to be "not very promising".{{cite web|title=Asus Pulling Back on Windows RT, Chairman Says|url=http://allthingsd.com/20130730/asus-pulling-back-on-windows-rt-chairman-says/|work=AllThingsD|access-date=August 7, 2013}}{{cite web|title=Asustek Pulls Plug on Windows RT Tablet|url=https://online.wsj.com/article/BT-CO-20130809-703280.html|work=Wall Street Journal|access-date=August 9, 2013|archive-date=August 11, 2013|archive-url=https://web.archive.org/web/20130811141114/http://online.wsj.com/article/BT-CO-20130809-703280.html|url-status=dead}} During the introduction of its Android and Windows 8-based Venue tablets in October 2013, Dell's vice president Neil Hand stated that the company had no plans to produce an updated version of the XPS 10.{{cite web|url=http://www.pcworld.com/article/2051700/with-new-venue-tablets-dell-signals-its-pc-division-is-alive-and-kicking.html|title=With new Venue tablets, Dell signals its PC division is alive and kicking|last1=Shah|first1=Agam|date=October 2, 2013|website=PC World|publisher=IDG|access-date=October 2, 2013}}

In September 2013, Nvidia CEO Jen-Hsun Huang stated that the company was "working really hard" with Microsoft on developing a second revision of Surface.{{cite web|title=Nvidia CEO: We're working hard on Surface 2|url=http://news.cnet.com/8301-1035_3-57597706-94/nvidia-ceo-were-working-hard-on-surface-2/|work=CNET|access-date=September 5, 2013}} The Microsoft Surface 2 tablet, which is powered by Nvidia's quad-core Tegra 4 platform and features the same full HD display as the Surface Pro 2, was officially unveiled on September 23, 2013, and released on October 22, 2013, following Windows 8.1 general availability the previous week.{{cite web|title=Microsoft announces the Surface 2, the follow-up to the original Surface RT; coming October 22nd for $449|url=https://www.engadget.com/2013/09/23/microsoft-surface-2-announced/|work=Engadget|date=September 23, 2013 |access-date=September 23, 2013}} On the same day as the Surface 2's release, Nokia (the acquisition of their mobile business by Microsoft had just been announced, but not yet been completed) unveiled the Lumia 2520, a Windows RT tablet with a Qualcomm Snapdragon 800 processor, 4G LTE, and a design similar to its line of Windows Phone products.{{cite web|title=Nokia answers the Surface 2 with the Lumia 2520, a beautiful, ultra-mobile Windows RT tablet|url=https://www.theverge.com/2013/10/22/4865306/nokia-lumia-2520-windows-tablet-announced|work=The Verge|date=October 22, 2013|access-date=October 22, 2013}} An LTE-capable version of the Surface 2 was made available the following year.{{Cite news|url=https://www.wired.co.uk/article/microsoft-surface-2|title=Microsoft Surface 2 4G review|last=Oliver|first=Dave|date=2014-05-15|work=Wired.co.uk|access-date=2018-04-09}}

In January 2015, after its stock sold out on Microsoft Store online, Microsoft confirmed that it had discontinued further production of the Surface 2 to focus on Surface Pro products.{{cite web|url=http://www.pcworld.com/article/2875808/microsoft-has-stopped-making-the-surface-2-tablet-spelling-trouble-for-windows-rt.html|title=Microsoft has stopped making the Surface 2 tablet, spelling trouble for Windows RT|last=Hachman|first=Mark|date=January 27, 2015|website=PC World|publisher=IDG|access-date=January 28, 2015}} Microsoft ended production of the Lumia 2520 the following month, ending active production of Windows RT devices after just over two years of general availability.{{cite web|url=https://www.pcworld.com/article/2878832/is-windows-rt-dead-windows-stops-making-nokia-lumia-2520.html|title=Is Windows RT dead? Microsoft stops making Nokia Lumia 2520|last=Shah|first=Agam|date=February 2, 2015|website=PC World|access-date=February 4, 2015}} With the end of production for both Surface 2 and Lumia 2520, Microsoft and its subsidiaries no longer manufacture any Windows RT devices.

Microsoft originally developed a "mini" version of its Surface tablet later known as Surface Mini and had planned to unveil it alongside the Surface Pro 3 in May 2014; it was reportedly cancelled at the last minute.{{Cite news|url=http://pocketnow.com/2014/10/01/surface-mini-was-cancelled|title=Thank goodness the Surface Mini was cancelled|last=Doud|first=Adam|date=2014-10-01|work=Pocketnow|access-date=2018-04-09|language=en-US|archive-date=July 22, 2018|archive-url=https://web.archive.org/web/20180722213817/http://pocketnow.com/2014/10/01/surface-mini-was-cancelled|url-status=dead}} Images of the product were leaked in June 2017, revealing specifications such as a Qualcomm Snapdragon 800, an 8-inch display, and support for the Surface Pen instead of a keyboard attachment.{{Cite news|url=https://www.windowscentral.com/microsofts-canceled-surface-mini-photos-exclusive|title=This is Microsoft's canceled Surface Mini (exclusive photos and details)|last=Bowden|first=Zac|date=2017-07-30|work=Windows Central|access-date=2018-04-09|language=en}}

In July 2016, an image depicting a number of cancelled Nokia-branded Lumia devices was released, depicting a prototype for a second Nokia tablet known as the Lumia 2020.{{cite web|title=Leaked Photo Shows Canceled Microsoft Phones and Nokia 2020 Windows RT Tablet|url=http://news.softpedia.com/news/leaked-photo-shows-canceled-microsoft-phones-and-nokia-2020-windows-rt-tablet-506589.shtml|website=Softpedia|date=July 25, 2016|access-date=August 1, 2016}} Details revealed in September 2017 showed the product to have an 8.3-inch display and the same Snapdragon 800 chip as that of the Surface "mini" tablet.{{Cite news|url=https://www.windowscentral.com/lumia-2020-review|title=Nokia's canceled Lumia 2020 was a compact Windows RT tablet after my heart|last=Bowden|first=Zac|date=2017-09-27|work=Windows Central|access-date=2018-04-09|language=en}}

{{See also|Windows 8#Reception}}

Windows RT's launch devices received mixed reviews upon their release. In a review of the Asus VivoTab RT by PC Advisor, Windows RT was praised for being a mobile operating system that still offered some PC amenities such as a full-featured file manager, but noted its lack of compatibility with existing Windows software, and that it had no proper media player aside from a "shameless, in-your-face conduit to Xbox Music."{{cite web|title=Asus Vivo Tab RT review|url=http://www.pcadvisor.co.uk/reviews/tablets/3407062/asus-vivo-tab-rt-review/|publisher=PC Advisor|access-date=November 2, 2012}} AnandTech believed Windows RT was the first "legitimately useful" mobile operating system, owing in part to its multitasking system, bundled Office programs, smooth interface performance, and "decent" support for a wider variety of USB devices in comparison to other operating systems on the ARM architecture. However, the OS was panned for its slow application launch times in comparison to a recent iPad, and spotty driver support for printers. The small number of "quality" apps available on launch was also noted—but considered to be a non-issue, assuming that the app ecosystem would "expand significantly unless somehow everyone stops buying Windows-based systems on October 26th."{{cite web|author1=Gowri, Vivek|author2=Shimpi, Anand Lal|title=The Windows RT Review|url=http://www.anandtech.com/show/6392/the-windows-rt-review|publisher=AnandTech|date=October 25, 2012|access-date=November 2, 2012}}

Reception of the preview release of RT 8.1 was mixed; both ExtremeTech and TechRadar praised the improvements to the operating system's tablet-oriented interface, along with the addition of Outlook; TechRadar{{'}}s Dan Grabham believed that the inclusion of Outlook was important because "nobody in their right mind would try and handle work email inside the standard Mail app—it's just not up to the task." However, both experienced performance issues running the beta on the Tegra 3-based Surface; ExtremeTech concluded that "as it stands, we’re still not sure why you would ever opt to buy a Windows RT tablet when there are similarly priced Atom-powered x86 devices that run the full version of Windows 8."{{cite web|title=Hands on: Windows 8.1 RT review|url=http://www.techradar.com/reviews/pc-mac/software/operating-systems/windows-8-1-rt-1162188/review|work=TechRadar|date=June 27, 2013|access-date=September 11, 2013}}

The need to market an ARM-compatible version of Windows was questioned by analysts because of recent developments in the PC industry; both Intel and AMD introduced x86-based system-on-chip designs for Windows 8, Atom "Clover Trail" and "Temash" respectively, in response to the growing competition from ARM licensees. In particular, Intel claimed that Clover Trail-based tablets could provide battery life rivaling that of ARM devices; in a test by PC World, Samsung's Clover Trail-based Ativ Smart PC was shown to have battery life exceeding that of the ARM-based Surface. Peter Bright of Ars Technica argued that Windows RT had no clear purpose, since the power advantage of ARM-based devices was "nowhere near as clear-cut as it was two years ago", and that users would be better off purchasing Office 2013 themselves because of the removed features and licensing restrictions of Office RT.{{cite web|last=Chacos|first=Brad|title=Why Windows RT is hurtling toward disaster|url=http://www.infoworld.com/d/microsoft-windows/why-windows-rt-hurtling-toward-disaster-210995?page=0,1|publisher=InfoWorld|access-date=January 27, 2013}}{{cite web|title=Can Intel Challenge ARM's Mobile Dominance?|url=https://www.forbes.com/sites/greatspeculations/2012/11/09/can-intel-challenge-arms-mobile-dominance/|work=Great Speculations|publisher=Forbes|access-date=November 22, 2012}}{{cite web|last=Bright|first=Peter|title=Now that it's here, is there a place for Windows RT?|date=October 24, 2012|url=https://arstechnica.com/gadgets/2012/10/now-that-its-here-is-there-a-place-for-windows-rt/|publisher=Ars Technica|access-date=November 22, 2012}}

Windows RT was also met with lukewarm reaction from manufacturers; in June 2012, Hewlett-Packard canceled its plans to release a Windows RT tablet, stating that its customers felt Intel-based tablets were more appropriate for use in business environments. In January 2013, Samsung cancelled the American release of its Windows RT tablet, the Ativ Tab, citing the unclear positioning of the operating system, "modest" demand for Windows RT devices, plus the effort and investment required to educate consumers on the differences between Windows 8 and RT as reasons for the move. Mike Abary, senior vice president of Samsung's U.S. PC and tablet businesses, also stated that the company was unable to build the Ativ Tab to meet its target price point—considering that lower cost was intended to be a selling point for Windows RT devices.{{cite web|last=Tibken|first=Shara|title=Uh-oh, Windows RT, Samsung's got second thoughts|url=http://ces.cnet.com/8301-34439_1-57563340/uh-oh-windows-rt-samsungs-got-second-thoughts/|publisher=CNET|access-date=January 11, 2013|archive-date=January 12, 2013|archive-url=https://web.archive.org/web/20130112055156/http://ces.cnet.com/8301-34439_1-57563340/uh-oh-windows-rt-samsungs-got-second-thoughts/|url-status=dead}} Nvidia CEO Jen-Hsun Huang expressed disappointment over the market performance of Windows RT, but called on Microsoft to continue increasing its concentration on the ARM platform. Huang also commented on the exclusion of Outlook from the Office 2013 suite included on the device and suggested that Microsoft port the software for RT as well (in response to public demand, Microsoft announced the inclusion of Outlook with future versions of Windows RT in June 2013).{{cite web|title=Nvidia CEO disappointed with Windows RT, prays to Outlook god|url=http://www.pcworld.com/article/2031336/nvidia-ceo-disappointed-with-windows-rt-prays-to-outlook-god.html|publisher=PC World|access-date=April 15, 2013}} In May 2013, reports surfaced that HTC had scrapped plans to produce a 12-inch Windows RT tablet as it would cost too much to produce, and that there would be greater demand for smaller devices.{{cite news|title=HTC Said to Cancel Large Windows RT Tablet on Weak Demand|newspaper=Bloomberg.com|date=May 30, 2013|url=https://www.bloomberg.com/news/2013-05-30/htc-said-to-cancel-large-windows-rt-tablet-on-weak-demand.html|publisher=Bloomberg|access-date=June 3, 2013}}

The poor demand resulted in price cuts for various Windows RT products; in April 2013 the price of Dell's XPS 10 fell from US$450 US to $300, and Microsoft began offering free covers for its Surface tablet in some territories as a limited-time promotion—itself a US$130 value for the Type Cover alone.{{cite web|title=Prices of Windows RT tablets drop, point to failure of OS|url=http://www.pcworld.com/article/2032871/prices-of-windows-rt-tablets-drop-point-to-failure-of-os.html|publisher=PC World|access-date=April 15, 2013}}{{cite web|title=Windows RT's race to the bottom|date=May 15, 2013|url=http://www.infoworld.com/t/microsoft-windows/windows-rts-race-the-bottom-218623|publisher=InfoWorld|access-date=May 22, 2013}} Microsoft also reportedly reduced the cost of Windows RT licenses for devices with smaller screens, hoping that this could spur interest in the platform.{{cite news|title=Microsoft Said to Cut Windows for Tablet Prices|newspaper=Bloomberg.com|date=June 3, 2013|url=https://www.bloomberg.com/news/2013-06-03/microsoft-said-to-cut-windows-for-tablet-prices.html|publisher=Bloomberg|access-date=June 3, 2013}} In July 2013, Microsoft cut the price of the first-generation Surface worldwide by 30%, with its U.S. price falling to $350. Concurrently, Microsoft reported a loss of US$900 million due to the lackluster sales of the device.{{cite news|first1=Nathan|last1=Ingraham|url=https://www.theverge.com/2013/7/18/4535976/microsoft-lost-900-million-on-surface-rt|title=Microsoft took a $900 million hit on Surface RT this quarter|publisher=Vox Media|work=The Verge|date=July 18, 2013|access-date=February 8, 2015|ref=$900M}}{{cite web|title=Microsoft Misses, Takes a $900 Million Charge on Surface RT Stock|url=http://allthingsd.com/20130718/microsoft-misses-shares-sink/|work=All Things Digital|access-date=July 25, 2013}}{{cite web|title=Microsoft cuts Surface RT prices by 30 percent worldwide, hopes to boost slow sales|url=https://www.theverge.com/2013/7/15/4524454/microsoft-surface-rt-price-cuts-worldwide|work=The Verge|date=July 15, 2013|access-date=July 25, 2013}}{{cite news|title=Microsoft's Surface Tablet Is Said to Fall Short of Predictions|newspaper=Bloomberg.com|date=March 15, 2013|url=https://www.bloomberg.com/news/2013-03-14/microsoft-s-surface-tablet-is-said-to-fall-short-of-predictions.html|publisher=Bloomberg|access-date=May 21, 2013}}{{cite news|last=Lowe|first=Scott|title=Microsoft Lost $900 Million on Surface RT in Q1|url=http://au.ign.com/articles/2013/07/18/microsoft-lost-900-million-on-surface-rt-in-q1|access-date=July 20, 2013|newspaper=IGN.com|date=July 18, 2013}} In August 2013, Dell silently pulled the option to purchase the XPS 10 from its online store without a keyboard dock (raising its price back up to US$479), and pulled the device entirely in September 2013.{{cite web|title=Dell drops $299 Windows RT tablet; cheapest deal is now $479|url=http://www.computerworld.com/s/article/9241708/Dell_drops_299_Windows_RT_tablet_cheapest_deal_is_now_479|work=Computerworld|date=August 17, 2013|access-date=August 17, 2013|archive-date=August 20, 2013|archive-url=https://web.archive.org/web/20130820062609/http://www.computerworld.com/s/article/9241708/Dell_drops_299_Windows_RT_tablet_cheapest_deal_is_now_479|url-status=dead}} Microsoft's discount on the Surface tablet did result in a slight increase of market share for the device; in late-August 2013, usage data from the advertising network AdDuplex (which provides advertising services within Windows Store apps) revealed that Surface usage had increased from 6.2 to 9.8%.{{cite web|title=Surface RT usage skyrockets after steep price cuts|url=http://www.pcworld.com/article/2047440/surface-rt-usage-skyrockets-after-steep-price-cuts.html|work=PC World|access-date=December 28, 2013}}

In contrast to Windows 8 (where the feature had to be enabled by default on OEM devices, but remain user-configurable), Microsoft requires all Windows RT devices to have UEFI Secure Boot permanently enabled, preventing the ability to run alternative operating systems on them. Tom Warren of The Verge stated that he would have preferred Microsoft to "keep a consistent approach across ARM and x86, though, not least because of the number of users who'd love to run Android alongside Windows 8 on their future tablets", but noted that the decision to impose such restrictions was in line with similar measures imposed by other mobile operating systems, including recent Android devices and Microsoft's own Windows Phone mobile platform.{{cite web|first=Jon|last=Brodkin|url=https://arstechnica.com/business/news/2012/01/microsoft-mandating-secure-boot-on-arm-making-linux-installs-difficult.ars|title=Microsoft mandating Secure Boot on ARM, making Linux installs difficult|work=Ars Technica|publisher=Condé Nast|date=January 16, 2012|access-date=August 3, 2012}}{{cite web|url=https://www.theverge.com/microsoft/2012/1/16/2710502/microsoft-secure-boot-windows-8-arm|title=Windows 8 ARM devices won't have the option to switch off Secure Boot|first=Tom|last=Warren|work=The Verge|date=January 16, 2012|access-date=August 3, 2012}}{{cite web|url=http://blogs.computerworlduk.com/open-enterprise/2012/01/is-microsoft-blocking-linux-booting-on-arm-based-hardware/index.htm|title=Is Microsoft Blocking Linux Booting on ARM Hardware?|author=Glyn Moody|date=January 12, 2012|work=Computerworld UK|url-status=dead|archive-url=https://web.archive.org/web/20120309162902/http://blogs.computerworlduk.com/open-enterprise/2012/01/is-microsoft-blocking-linux-booting-on-arm-based-hardware/index.htm|archive-date=March 9, 2012|df=mdy-all}}

The requirement to obtain most software on Windows RT through Windows Store was considered to be similar in nature to the application stores on other "closed" mobile platforms; where only software certified under guidelines issued by the vendor (i.e. Microsoft) can be distributed in the store.{{cite web|title=Microsoft: We Can Remotely Delete Windows 8 Apps|url=http://www.pcworld.com/article/245797/microsoft_we_can_remotely_delete_windows_8_apps.html|work=PC World|access-date=July 10, 2013|archive-date=May 18, 2013|archive-url=https://web.archive.org/web/20130518115144/http://www.pcworld.com/article/245797/microsoft_we_can_remotely_delete_windows_8_apps.html|url-status=dead}} Microsoft was also criticized by the developers of the Firefox web browser for effectively preventing the development of third-party web browsers for Windows RT (and thus forcing use of its own Internet Explorer browser) by restricting the development of desktop applications and by not providing the same APIs and exceptions available on Windows 8 to code web browsers that can run as apps. However, the European Union, in response to a complaint about the restrictions in relation to an antitrust case involving Microsoft, ruled that "so far, there are no grounds to pursue further investigation on this particular issue." As mandated by the EU, the BrowserChoice.eu service is still included in Windows 8.{{cite web|title=EU antitrust regulators let Microsoft limit browsers on Windows RT|url=http://www.pcworld.com/article/2013097/eu-antitrust-regulators-let-microsoft-limit-browsers-on-windows-rt.html|work=PC World|access-date=December 31, 2013|archive-date=January 1, 2014|archive-url=https://web.archive.org/web/20140101115248/http://www.pcworld.com/article/2013097/eu-antitrust-regulators-let-microsoft-limit-browsers-on-windows-rt.html|url-status=dead}}

In January 2013, a privilege escalation exploit was discovered in the Windows kernel that can allow unsigned code to run under Windows RT; the exploit involved the use of a remote debugging tool (provided by Microsoft to debug WinRT apps on Windows RT devices) to execute code which changes the signing level stored in RAM to allow unsigned code to execute (by default, it is set to a level that only allows code signed by Microsoft to execute).{{cite web|title=Windows RT jailbroken to run third-party Desktop apps|date=January 7, 2013 |url=http://www.extremetech.com/computing/144888-windows-rt-jailbroken-to-run-third-party-desktop-apps|publisher=ExtremeTech|access-date=March 14, 2013}} Alongside his explanation of the exploit, the developer also included a personal appeal to Microsoft urging them to remove the restrictions on Windows RT devices, contending that their decision was not for technical reasons, and that the devices would be more valuable if this functionality were available.{{cite web|last=Paul|first=Ian|title=Windows RT can be tweaked to run desktop apps, hacker says|url=http://www.pcworld.com/article/2023856/windows-rt-can-be-tweaked-to-run-desktop-apps-hacker-says.html|publisher=PC World|access-date=January 8, 2013}} In a statement, a Microsoft spokesperson applauded the effort, indicating that the exploit does not pose a security threat because it requires administrative access to the device, advanced techniques, and would still require programs to be re-compiled for ARM. However, Microsoft has still indicated that the exploit would be patched in a future update.{{cite web|last=Whitney|first=Lance|title=Windows RT hack? Don't sweat it, Microsoft says|url=http://news.cnet.com/8301-10805_3-57562697-75/windows-rt-hack-dont-sweat-it-microsoft-says/|publisher=CNET|access-date=January 10, 2013}}

A batch file-based tool soon surfaced on XDA Developers to assist users in the process of performing the exploit, and a variety of ported desktop applications began to emerge, such as the emulator Bochs, PuTTY and TightVNC.{{cite web|last=Paul|first=Ian|title=Jailbreak tool gives Windows RT tablets desktop-like functions|url=http://www.pcworld.com/article/2024918/jailbreak-tool-gives-windows-rt-tablets-desktop-like-functions.html|publisher=PC World|access-date=January 12, 2013}}{{cite web|title=You can jailbreak Windows RT to run desktop apps...or even Mac OS|url=http://www.itworld.com/consumerization-it/335499/you-can-jailbreak-windows-rt-run-desktop-appsor-even-mac-os|publisher=IT World|access-date=January 12, 2013|archive-date=January 14, 2013|archive-url=https://web.archive.org/web/20130114034508/http://www.itworld.com/consumerization-it/335499/you-can-jailbreak-windows-rt-run-desktop-appsor-even-mac-os|url-status=dead}}{{cite web|title=Microsoft declares Windows RT Jailbreak tool is safe, says it 'appreciates the work of researchers'|date=January 11, 2013|url=https://thenextweb.com/microsoft/2013/01/11/microsoft-is-investigating-windows-rt-jailbreak-tool-says-will-take-appropriate-action/|publisher=The Next Web|access-date=January 28, 2013}} Afterwards, an emulator known as "Win86emu" surfaced, allowing users to run x86 software on a jailbroken Windows RT device. However, it does not support all Windows APIs, and runs programs slower than they would on a native system.{{cite web|title=How to run normal x86 Windows apps on your Windows RT tablet|url=http://www.extremetech.com/computing/148841-how-to-run-normal-x86-windows-apps-on-your-windows-rt-tablet|work=ExtremeTech|date=February 20, 2013 |access-date=December 22, 2013}}

In November 2013, speaking about Windows RT at the UBS Global Technology Conference, Julie Larson-Green made comments discussing the future of Microsoft's mobile strategy surrounding the Windows platform. Larson-Green stated that in the future (accounting for Windows, Windows RT, and Windows Phone), Microsoft was "[not] going to have three [mobile operating systems]." The fate of Windows RT was left unclear by her remarks; industry analysts interpreted them as signs that Microsoft was preparing to discontinue Windows RT due to its poor adoption, while others suggested that Microsoft was planning to unify Windows with Windows Phone.{{cite web|title=Microsoft ready to kill Windows RT|url=https://www.theguardian.com/technology/2013/nov/26/microsoft-kill-windows-rt-larson-green|work=The Guardian|date=November 26, 2013|access-date=November 29, 2013}}{{cite web|title=Microsoft's device chief sees a future without three versions of Windows|url=https://www.theverge.com/2013/11/25/5142850/julie-larson-green-future-windows-versions|work=The Verge|date=November 25, 2013|access-date=November 29, 2013}} Microsoft ultimately announced its "Universal Windows Apps" platform at Build 2014, which would allow developers to create WinRT apps for Windows, Windows Phone, and Xbox One that share common codebases.{{cite web|title=Microsoft's universal Windows apps run on tablets, phones, Xbox, and PCs|url=http://www.pcworld.com/article/2138625/microsoft-introduces-universal-apps-that-scale-across-phones-tablets-and-pcs.html|work=PC World|publisher=IDG|access-date=April 5, 2014}}{{cite web|title=Rejoice! The Start menu is coming back to Windows|url=http://www.pcworld.com/article/2138443/rejoice-the-start-menu-is-coming-back-to-windows.html|work=PC World|publisher=IDG|access-date=April 2, 2014}}{{cite web|title=Future Windows 8.1 update will finally bring back the Start menu|url=https://arstechnica.com/gadgets/2014/04/future-windows-8-1-update-will-finally-bring-back-the-start-menu/|work=Ars Technica|date=April 2, 2014|access-date=April 5, 2014}}{{cite web|title=One Windows, all devices: The new Microsoft app strategy unveiled|url=http://www.infoworld.com/t/microsoft-net/one-windows-all-devices-the-new-microsoft-app-strategy-unveiled-239698|work=InfoWorld|date=April 2, 2014|access-date=April 5, 2014}} These initiatives were compounded by a goal for Windows 10 to unify the core Windows operating system across all devices.

Critics interpreted Microsoft's move to cancel the launch of a smaller Surface model in May 2014 as a further sign that Microsoft, under new CEO Satya Nadella, and new device head Stephen Elop (who joined Microsoft upon the purchase of Nokia's mobile phone business in September 2013,{{Cite news|url=http://www.businessinsider.com/stephen-elop-returns-to-microsoft-2013-9|title=Steve Ballmer Tells Employees: 'Stephen Elop Will Be Coming back to Microsoft'|last=Bort|first=Julie|date=2013-09-03|work=Business Insider|access-date=2018-04-09}} only to depart the company the following year{{Cite news|url=https://thenextweb.com/microsoft/2015/06/17/nokias-ex-ceo-stephen-elop-is-leaving-microsoft/|title=Nokia's ex-CEO, Stephen Elop, is leaving Microsoft|last=Williams|first=Owen|date=2015-06-17|work=The Next Web|access-date=2018-04-09|language=en-US}}), was planning to further downplay Windows RT, given that the company had shifted its attention towards a higher-end, productivity-oriented market with the Pro 3—one which would be inappropriate for Windows RT given its positioning and limitations. Analysts believed that Microsoft was planning to leverage its acquisition of Nokia's device business for future Windows RT devices, possibly under the Lumia brand;{{cite news|title=Why the Surface Pro 3 just killed Windows RT|url=http://blogs.computerworld.com/tablets/23942/why-surface-pro-3-just-killed-windows-rt|access-date=July 24, 2014|work=ComputerWorld|date=May 22, 2014|archive-date=August 10, 2014|archive-url=https://web.archive.org/web/20140810171153/http://blogs.computerworld.com/tablets/23942/why-surface-pro-3-just-killed-windows-rt|url-status=dead}}{{cite news|title=What Microsoft didn't announce today: An ARM-based Surface Mini|url=https://www.zdnet.com/article/what-microsoft-didnt-announce-today-an-arm-based-surface-mini/|access-date=July 24, 2014|work=ZDNet|date=May 20, 2014}}{{cite news|title=Windows RT isn't dead -- yet|url=http://www.computerworld.com/s/article/9248465/Windows_RT_isn_t_dead_yet|access-date=July 24, 2014|work=ComputerWorld|date=May 20, 2014|archive-date=June 30, 2014|archive-url=https://web.archive.org/web/20140630094116/http://www.computerworld.com/s/article/9248465/Windows_RT_isn_t_dead_yet|url-status=dead}}

On January 21, 2015, Microsoft unveiled Windows 10 Mobile, an edition of Windows 10 for smartphones and sub-8-inch tablets running on ARM architecture; unlike RT, which was based upon the user experience of the PC version, Windows 10 on these devices is a continuation of the Windows Phone user experience that emphasizes the ability for developers to create "universal" Windows apps that can run across PCs, tablets, and phones, and only supports the modern-style interface and Windows apps (although on compatible devices, a limited desktop experience will be available when connected to an external display).{{cite web|title=A PC in Your Pocket: Continuum for Windows Phones|url=http://windowsitpro.com/windows-10/pc-your-pocket-continuum-windows-phones|access-date=May 16, 2015|website=Windows IT Pro|publisher=Penton}}{{cite web|date=April 29, 2015|title=Your Windows 10 phone can turn into a full PC|url=https://www.theverge.com/2015/4/29/8513519/microsoft-windows-10-continuum-for-phones|access-date=April 29, 2015|website=The Verge}}{{cite web|title=Microsoft has 'tailored' version of Windows 10 for phones, tablets|url=http://www.cnet.com/news/microsoft-has-tailored-version-of-windows-10-for-phones-tablets/|access-date=January 23, 2015|website=CNET|publisher=CBS Interactive}}{{cite web|last1=Savov|first1=Vlad|date=January 21, 2015|title=Windows 10 makes its phone debut|url=https://www.theverge.com/2015/1/21/7865923/microsoft-windows-10-mobile-os|access-date=January 21, 2015|website=The Verge|publisher=Vox Media}} Following the event, a Microsoft spokesperson stated that the company was working on a Windows RT update that would provide "some of the functionality of Windows 10",{{cite web|title=Microsoft's Windows RT isn't dead… yet|url=http://www.cnet.com/news/microsofts-windows-rt-isnt-dead-yet/|access-date=January 21, 2015|website=CNET|publisher=CBS Interactive}}{{cite web|title=Windows 10 will be a free upgrade for Windows 7 and Windows 8 users|url=http://www.pcworld.com/article/2873214/windows-10-will-be-a-free-upgrade-for-windows-7-and-8-users.html|access-date=January 22, 2015|website=PCWorld|publisher=IDG}} and the company ended production of both the Surface 2 and Lumia 2520.

Microsoft's purchase of Nokia ultimately turned out to be a failure,{{Cite news|url=https://www.windowslatest.com/2016/11/08/reason-lumia-failed/|title=This is The Reason of Why Lumia Failed|date=2016-11-08|work=Windows Latest|access-date=2018-04-09|language=en-US|archive-date=January 13, 2020|archive-url=https://web.archive.org/web/20200113094309/https://www.windowslatest.com/2016/11/08/reason-lumia-failed/|url-status=dead}} and Microsoft would eventually leave the consumer mobile phone market,{{Cite news|url=https://www.networkworld.com/article/955890/microsoft-is-leaving-the-consumer-mobile-market.html|title=Microsoft is leaving the consumer mobile market|last=Patrizio|first=Andy|date=2016-09-29|work=Network World|access-date=2018-04-09|language=en}} selling its assets to Foxconn and HMD Global in May 2016.{{Cite news|url=https://www.cnbc.com/2016/05/18/nokia-phones-are-back-after-microsoft-sells-mobile-assets-for-350-million-to-foxconn-hmd.html|title=Nokia phones are back as Microsoft sells mobile assets to Foxconn|last=Kharpal|first=Arjun|date=2016-05-18|work=CNBC|access-date=2018-04-09}}

Newer Intel processors for mobile devices were more competitive in comparison to ARM equivalents in regards to performance and battery life; this factor and other changes made by Microsoft, such as the removal of Windows OEM license fees on devices with screens less than 9 inches in size,{{cite web|title=Microsoft making Windows free on devices with screens under 9 inches|url=https://www.theverge.com/2014/4/2/5574146/microsoft-making-windows-free-on-devices-with-screens-under-nine/in/5338899|work=The Verge|date=April 2, 2014|access-date=April 2, 2014}} spurred the creation of a market for lower-end tablets running the full Windows 8 operating system on Intel-compatible platforms, leaving further uncertainty over Microsoft's support of ARM outside of smartphones—where they remain ubiquitous.{{cite web|title=Windows 10 On ARM: 7 Observations|url=http://www.informationweek.com/mobile/mobile-devices/windows-10-on-arm-7-observations/a/d-id/1316523|website=InformationWeek|date=October 13, 2014|access-date=November 24, 2014}}{{cite web|title=Cheap Windows 8.1 tablets flood the market|url=http://www.infoworld.com/article/2825878/mobile-technology/cheap-windows-8-1-tablets-rush-to-the-bottom-windows-rt-loses-big-time.html|website=InfoWorld|date=October 14, 2014|access-date=November 24, 2014}} Such a device came in March 2015, when Microsoft unveiled a new low-end Surface model, the Intel Atom-based Surface 3; unlike previous low-end Surface models, Surface 3 did not use ARM and Windows RT.{{cite web|title=Microsoft's Surface 3 is a $499 tablet that could be a full Windows laptop|url=https://www.theverge.com/2015/3/31/8317597/microsoft-surface-3-tablet-features|website=The Verge|date=March 31, 2015|access-date=March 31, 2015}} It was succeeded in 2018 by the Pentium Gold Surface Go.{{Cite web|last=Bohn|first=Dieter|date=2018-08-07|title=Microsoft Surface Go review: a little goes a long way|url=https://www.theverge.com/2018/8/7/17657174/microsoft-surface-go-review-tablet-windows-10|access-date=2022-11-04|website=The Verge|language=en-US}}

Windows 8.1 RT Update 3 (KB3033055){{Cite web|title=Windows 8.1 RT Update 3|url=https://support.microsoft.com/en-us/surface/windows-8-1-rt-update-3-28beae0d-e383-8d0b-6cf8-ba5c15b400fd|access-date=2021-04-06|website=support.microsoft.com}} was released on September 16, 2015;{{cite web|url=http://www.techradar.com/news/software/operating-systems/microsoft-confirms-windows-rt-will-get-an-update-within-weeks-1297963|title=Microsoft confirms Windows RT will get an update within weeks|website=TechRadar|publisher=Future|access-date=June 29, 2015}}{{cite web|url=http://www.neowin.net/news/windows-rt-update-3-is-coming-in-september|title=Windows RT update 3 is coming in September|last1=Sams|first1=Brad|website=Neowin|publisher=Neowin LLC|access-date=July 15, 2015}} it adds a version of the updated Start menu seen in early preview versions of Windows 10 (which combines an application list with a sidebar of tiles), but otherwise does not contain any other significant changes to the operating system or its functionality, nor any support for Windows 10's application ecosystem. The Verge characterized this update as being similar to Windows Phone 7.8—which similarly backported user interface changes from Windows Phone 8 (which switched from a Windows Mobile-derived platform to one derived from the NT kernel), without making any other significant upgrades to the platform.{{cite web|url=http://www.pcworld.com/article/2949983/windows/windows-rt-users-shouldnt-expect-much-from-update-3-report-claims.html|title=Windows RT users shouldn't expect much from Update 3, report claims|website=PC World|publisher=IDG|access-date=July 20, 2015}}{{cite web|url=https://www.theverge.com/2015/8/9/9123277/windows-rt-8-1-update-3-start-menu-lock-screen-features|title=Upcoming Windows RT update will include new Start menu and lock screen|website=The Verge|date=August 9, 2015|access-date=August 20, 2015}}

On December 7, 2016, Microsoft announced that as part of a partnership with Qualcomm, it planned to launch an ARM version of Windows 10 for Snapdragon-based devices, initially focusing on laptops. Unlike Windows RT, the ARM version of Windows 10 supports using an emulation layer to run software compiled for 32-bit x86 architectures.{{cite web |title=Microsoft is bringing Windows desktop apps to mobile ARM processors |url=https://www.theverge.com/2016/12/7/13866936/microsoft-windows-10-arm-desktop-apps-support-qualcomm |website=The Verge |date=December 7, 2016 |publisher=Vox Media |access-date=December 8, 2016}} {{anchor|AOAC|ACPC}}The following year, Microsoft announced the Always Connected PC brand, covering Windows 10 devices with cellular connectivity; the launch featured two Snapdragon 835-powered 2-in-1 laptops from Asus and HP, and an integration of Qualcomm's Snapdragon X16 gigabit LTE modem with AMD's Ryzen Mobile platform.{{Cite news |url=https://www.anandtech.com/show/12119/microsoft-launches-windows-10-on-arm-always-connected-pcs |date=2017-12-05 |title=Microsoft Launches Windows 10 On ARM: Always Connected PCs |last=Howse |first=Brett |work=AnandTech |access-date=2017-12-05}}{{Cite news |url=https://www.engadget.com/2017/12/05/amd-qualcomm-always-connected-pc-ryzen-snapdragon/ |title=AMD and Qualcomm join forces to power higher-end connected PCs |date=2017-12-05 |work=Engadget |access-date=2017-12-05 |language=en-US}}

On May 2, 2017, Microsoft unveiled Windows 10 S, an edition of Windows 10 designed primarily for low-end mobile devices targeting the education market (competing primarily with Google's Linux-based ChromeOS). Similarly to Windows RT, it restricted software installation to applications obtained via Windows Store.{{cite web|url=https://www.theverge.com/2017/5/2/15506378/microsoft-windows-10-s-os-operating-system-announced-features|title=Windows 10 S is Microsoft's answer to Chrome OS|website=The Verge|date=May 2, 2017|access-date=May 2, 2017}}{{Cite web|url=https://arstechnica.com/information-technology/2016/09/desktop-apps-make-their-way-into-the-windows-store/|title=Desktop apps make their way into the Windows Store|last=Bright|first=Peter|date=September 14, 2016|website=Ars Technica|publisher=Condé Nast}}{{cite web|url=https://www.theverge.com/2017/2/3/14502748/windows-10-cloud-leaked-screenshots|title=Windows 10 Cloud looks just like Windows 10 in leaked screenshots|website=The Verge|date=February 3, 2017|publisher=Vox Media|access-date=March 11, 2017}}{{cite web|url=http://www.pcworld.com/article/3191195/computers/leaked-microsoft-document-confirms-windows-10-cloud-and-a-chromebook-competitor.html|title=Leaked Microsoft document confirms Windows 10 Cloud and a Chromebook competitor|website=PC World|publisher=IDG|access-date=April 23, 2017}} Windows 10 S was replaced by S Mode, a mode in which manufacturers can ship Windows 10 computers with the same restrictions, but they can be turned off by the user.{{Cite news|url=https://www.theverge.com/2018/3/8/17095424/microsoft-windows-10-s-mode-free-upgrades|title=Microsoft admits Windows 10 S was confusing, new 'S Mode' upgrades will be free|work=The Verge|access-date=2018-03-08}}

{{reflist}}

• [https://windows.microsoft.com/en-us/windows/windows-rt-faq Windows RT 8.1: FAQ]
• [https://www.techradar.com/news/software/operating-systems/windows-8-vs-windows-rt-what-s-the-difference-1086980 Windows 8 vs Windows RT 8: what's the difference?]

{{Microsoft Windows family}}

{{Windows tablets}}

{{Mobile operating systems}}

Category:2012 software

Category:ARM operating systems

Category:Mobile operating systems

Category:Tablet operating systems

Category:Windows 8

Category:Products and services discontinued in 2023

RT

no:Windows 8#RT