Microsoft has temporarily pulled its newly-launched Windows RT 8.1 update from the Windows Store, following reports of bricked devices and lost data.

Just two days after the Windows RT 8.1 update became available for download for existing Windows RT users, Microsoft pulled the update due to some "situation." The company offered only a vague explanation for the issue. The update became temporarily unavailable on Saturday, Oct. 19, as the WinBeta site reported.

"Microsoft is investigating a situation affecting a limited number of users updating their Windows RT devices to Windows RT 8.1. As a result, we have temporarily removed the Windows RT 8.1 update from the Windows Store," the company explained in a statement on its Community website. "We are working to resolve the situation as quickly as possible and apologize for any inconvenience. We will provide updates as they become available."

The new Windows 8.1 for Intel and Windows RT 8.1 for ARM devices became available for download just a little earlier in the week. While the Windows 8.1 update seems to have gone smoothly, some Windows RT users reportedly faced difficulties in finding the Windows RT 8.1 update and starting the update process on their ARM-based and OEM systems.

Microsoft has not specified why exactly it pulled the Windows RT 8.1 update, but several reports indicate that an issue damaging data for some devices during the update may be behind it. Affected systems were reportedly rendered unusable until repaired through a recovery drive.

The company has not mentioned just how long it will keep the update offline, but it did say that it will "provide updates as they become available."

In other words, those looking to bump up their Windows RT tablet to the new 8.1 update this weekend will have to wait a while longer until the update becomes available again. On the bright side, the issue seems to have affected only a limited number of users and Microsoft should patch things up soon enough.

Microsoft's new-generation Surface tablets, the Windows 8.1-based Surface Pro 2 and the Windows RT 8.1-based Surface 2 are set to go on sale on Oct. 22. The company should have the Windows RT 8.1 update up and running by that time.