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

[File History (known issue)] Fixed: This update addresses an issue where File History might fail to back up or restore files to an external drive or network location. Affected devices might ...

If File History is not working and the Doesn’t recognize this drive error keeps troubling you, this post may help you. File History in Windows 11/10 allows users to ...

Reconnect it and then tap or click to keep saving copies of your files. Or even- Your files will be temporarily copied to your hard drive until you reconnect your File History drive and run a backup.

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 ...