
Windows RT was released to mixed reviews from various outlets and critics. This would later be corrected with the release of Windows 10 version 1709 for ARM64 devices.

It also lacks support for running applications designed for x86 processors, which were the main platform for Windows at the time. However, while Windows RT inherits the appearance and functionality of Windows 8, it has a number of limitations it can only execute software that is digitally signed by Microsoft (which includes pre-loaded software and Windows Store apps), and it lacks certain developer-oriented features. In comparison to other mobile operating systems, Windows RT also supports a relatively large number of existing USB peripherals and accessories and includes a version of Microsoft Office 2013 optimized for ARM devices as pre-loaded software. Microsoft intended for devices with Windows RT to take advantage of the architecture's power efficiency to allow for longer battery life, to use system-on-chip (SoC) designs to allow for thinner devices and to provide a "reliable" experience over time.

Unlike Windows 8, Windows RT is only available as preloaded software on devices specifically designed for the operating system by original equipment manufacturers (OEMs). First unveiled in January 2011 at Consumer Electronics Show, the Windows RT 8 operating system was officially launched alongside Windows 8 on October 26, 2012, with the release of three Windows RT-based devices, including Microsoft's original Surface tablet. It is a version of Windows 8 built for the 32-bit ARM architecture (ARMv7). Windows RT is a deprecated mobile operating system developed by Microsoft. Extended support for Windows RT 8.1 until Janu.

Mainstream support for Windows RT 8.1 ended January 9, 2018.Customers must update to Windows RT 8.1 to continue to receive support. Windows RT 8 support ended on January 12, 2016.
