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Trying to manually extract File History to a valid and accessible flash drive. The appropriate drive appears when File History is selected but the following message appears when the run function is exercised:
"Reconnect Your Drive
Your files will be temporarily copied to your hard drive until you reconnect your File History drive and run a backup."
I do this weekly and have done so for years without issue. The last run was successfully executed on 09/12/2026 and the run attempt on 09/26/2026 spawned the error message.
I've tried the various fixes suggested in researching a solution but to no avail. I may not be getting the desired response because of the way I structure the query but it seems pretty straight forward.
Has anyone else encountered this issue recently and/or have a solution that will allow me to run File History?
Thanks!
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Hello H-J.
Two culprits: Security Update from 9/9, (KB5124008)(26200.9445) and (KB5129195)(26200.9457) installed on 9/15 are causing the issue.
If you can uninstall them and make sure WU will not reinstall them (use wushowhide tool to hide both ) pause WU and right after run WU to ensure WU will not reinstall them) you can reconnect your FH drive.
That is what I did to solve the problem, until MS has a fix....
A recent Windows update has broken File History in Windows 11, this is a widely reported problem, Microsoft have indicated they are aware of this problem and they are working to resolve the problem and will provide a patched update as soon as they have found the cause of the problem in that update, currently, there is no workaround to resolve this, we just need to wait for Microsoft to resolve this.
September 22, 2026—KB5124010 (OS Builds 26200.9550 and 26100.9550) Preview resolves the File History error.
[File History] 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 incorrectly display a “Reconnect your drive” message even when a compatible backup drive is connected and working properly.
Issue still exists subsequent to executing the update.
When I bring up File History, the correct disk is displayed however underneath it is the notation "unknown error" and at the top is a banner that reads "File History doesn't recognize this drive. Select another drive".
I've run the error check against the disk and no errors were found. No issues opening the files that exist on that disk.
Does the "Select drive" option help?
If you have older backups on a previous drive, Windows will ask if you want to move your existing files to the new drive. Choose Yes or No depending on whether you want to keep or discard your previous history.
Thank you. Appreciate the help
