After releasing and subsequently pulling a buggy version of Windows RT 8.1
from the Windows Store, Microsoft is offering a fix to affected users. Redmond has released instructions for restoring those devices that involves creating a USB recovery drive among other things. If doing it DIY seems a bit overwhelming, however, you can also send your tablet in for service. No word yet on when a fresh and fixed version of the Windows RT update will return to the Windows Store, but you can find detailed instructions for restoring your tablet at the source link below.