File History has stopped functioning

i be able to fix it but new problem keep showing up

first- i found out the File History stop updating the file's newer version, latest backup in File History is around 1-2 months ago

- I go to delete File History's files to set it up anew > but File History not accepting my drive > i find solution in the internet of deleting File History's cache, fixed > but File history now won't run, clicking "turn on" does nothing, seem to run but then stop, won't turning on > find solution in this site by putting code in CMD as administrator, fixed

BUT NOW, it duplicates files even if the file changes nothing, and as because it keep duplicating, the File Restore menu of File History won't show anything; it keeps saying that "File History is running for the first time..." > i continues to try, but I'm stuck here, files keep duplicating in File History's folders and won't allow me to open its menu to restore file, also there is no version of the file that is already has its backup in File History's folders

So yeah 😅 darkness on all sides, it working but can't use it to restore anything now, even if it keep duplicating the file, so i guess i can only manually pick the file's backup now

What angered me the most was that when I asked customer service for the process record of our encountered files, they actually told me to reinstall the system. I was furious; their attitude was very passive.

My last Successful FileHistory backup was 20July.  This was the same time as KB101650 installed.

There are no files written to external drive.

```
Get-HotFix -Id KB5101650,KB5121003 -ErrorAction SilentlyContinue | Format-Table HotFixID,InstalledOn,Description

HotFixID InstalledOn Description

-------- ----------- -----------

KB5101650 20/07/2026 12:00:00 AM Security Update

fhmanagew.exe -backupnow does nothing.

I have reviewed all configurations. There is nothing remarkable in the eventlogs.

https://feedbackportal.microsoft.com/feedback/

Even after updating KB5121003, the archive history wasn't fixed. Has Microsoft taken this issue seriously?

So, I was never able to fix this. But I did exclude two folders in which error messages were always occurring. And it ran once I excluded the folders.

BUT.... I tried it today, and now there is a completely different problem. it is not launching the backup. When I plug it in the PC recognizes that drive is plugged in, and the "run now" link appears, but clicking on it does nothing......

Takket​ 

Based on your description in the image above, my problem is different from yours. The error occurred on June 1, 2026, at which point the archive history could be accessed.

The anomaly only appeared after KB5101684 was updated on July 29th.

Mine is showing the same symptoms. The last file date I see on the external drive in the archive history is July 28, 2026, and KB5101684 was updated on July 29, so it's clearly related to KB5101684. It's still staging files on the C drive, and I've wasted too much time trying to fix this. I hope the next cumulative update will fix it; it's excessive that Microsoft refuses to admit its mistakes.

File History has recently stopped working for me.  I have tried numerous fixes, including those mentioned by several of the other contributors.  Nothing worked.  This is very frustrating.  

Same symptoms.  The last files I see on my external drive under File History are from 7/14/26, so it's pretty obvious that it's related to KB5101650 or KB5100998.  It is still staging files on C:, and I've wasted enough time trying to fix this.  I'm hoping the next cumulative addresses it.