While the general consensus for the Windows 8.1 update has been positive (except for odd issues of the system not understanding when it is on a non-touchscreen device and leaving tutorials permanently on-screen), but that isn't the case for Windows RT users. Apparently, there have been issues plaguing RT users since the update, forcing Microsoft to pull the Windows RT 8.1 update from the Windows Store...Source: http://www.phonearena.com/news/Windows-RT-8.1-pulled-from-Windows-Store-due-to-undisclosed-issues_id48457
