The problems of the Windows RT 8.1 update have been fixed, and the update is now back at the Windows App Store.

The RT 8.1 update released Thursday was pulled out of the Windows App Store for causing Boot Data damage to some Surface RT devices.

The update includes Outlook 2013 and a number of other features to suit the modern operating system.

After its launch and the yanking that followed over the weekend, Microsoft said it only caused the error on some devices.

While there's not much news about the PC update Windows 8.1, it did suffer a few hiccups, according to PC World. The error is also on a rather small scale, sources say.

Microsoft did not issue an official statement after the pullout of Windows RT 8.1 on Saturday, but it mentioned in one of its support forums that it is working on bug fixes.

After the fix, Microsoft announced that the update for RT devices is "once again available as a free download in the Windows Store."

The announcement added that Microsoft immediately suspended the update's availability due to "reports that a very small number of Surface RT customers - around 1 out of every 1,000 Surface RT 8.1 installs - had experienced an issue that left the update incomplete and their devices unbootable."

Microsoft further explains in the announcement that what happened was a "rare situation." It added that what caused the problem was incomplete firmware updates.

"In most cases, if a customer encountered this issue the result was simply an extra reboot. However, for a very small percentage, the boot configuration data was affected which prevented a successful boot," Microsoft said.

Microsoft also said that they worked as quickly as they could to resolve the Windows RT 8.1 update and "now encourage customers to update their Surface RT devices."

The announcement also noted that users of 8.1 and Surface Pro were not affected by the bug.