Microsoft says it fixed a Windows 10 update bug that deleted folders

Microsoft says it fixed a Windows 10 update bug that deleted folders

Microsoft says it fixed a Windows 10 update bug that deleted folders

The good news is that Microsoft has seemingly fixed the issue in Windows 10 Build 17763.17, and now the original old folder location and all the personal documents it contained should remain intact when you install the October 2018 update. It is unclear as to what is causing files to randomly go missing or get deleted on users' systems.

Apart from these, Microsoft has also released Windows 10 cumulative update to version 1703 Build 15063.1387 (KB4462937), and version 1607 Build 14393.2551 (KB4462917), which is only available for Windows 10 Enterprise and Windows 10 Education editions as version 1607 reached the end of service on April 10, 2018.

Microsoft confirms that it has investigated the issue fully so that the described issues won't occur anymore.

As Microsoft's John Cable explains in a post on Microsoft's Windows Blog, the problem was with the "Known Folder Redirection" feature. So, to solve the problem, Microsoft introduced code that would delete those old, empty folders. "While the reports of actual data loss are few (one one-hundredth of one percent of version 1809 installs), any data loss is serious", the exec wrote.

According to Cable, the bug was related to how Windows handled a feature called Known Folder Redirection (KFR), in which "known folders of Windows including Desktop, Documents, Pictures, Screenshots, Videos, Camera Roll, etc." are reassigned to different locations on a machine's hard drive. For example, the user changed the location property of the documents folder from c:\users\username\documents to another folder.

In response, Microsoft paused the OS rollout two days after the release of Windows 10 version 1809, Cable indicated. However, it is holding back on releasing the new operating system generally until further testing is completed. This is the feature that lets you move a known folder like C:\Users\Name\Downloads to D:\Downloads, for example. If KFR had been previously enabled, intentionally or by mistake/automatically, but the files remained in the old location instead of being moved to the redirected location, they ended up being deleted.

Microsoft enabled new feedback functionality today that adds options to classify impact and severity of the reported issue. Microsoft made no mention of that in the update on the Windows Experience website.

For those who are affected, they should call Microsoft at +1-800-MICROSOFT or find a local number in your area. Microsoft retail stores will also try to help, and may be able to aid you in recovering your deleted files.

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