A bug in the Windows Sept patch Tuesday update may stop File History from working. But a new optional update fixes it.

Microsoft warned that the built-in File History backup feature in Windows may stop working on some systems after installing the September 2026 security updates.

Microsoft has fixed a known issue that breaks the built-in File History backup feature on some Windows systems after installing the September 2026 security updates. In a Saturday service alert seen by ...

Microsoft has issued a warning to Windows users who rely on the File History that the backup feature may not function after installing the September 2026 Windows security update. The problem affects ...

A bug in the Windows Sept patch Tuesday update may stop File History from working. But a new optional update fixes it. Windows users who rely on File History to back up and recover important files may ...

Microsoft has confirmed a regression in its September 2026 cumulative security updates that breaks File History, the built-in backup feature in Windows 10 and Windows 11. The bug causes local and ...