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sheraton
Brass Contributor
Sep 03, 2026

I want to ask Microsoft, why are there abnormal in the file history logs after these two updates?

This past month has been very frustrating for me. It's not that I like to ramble, but I've genuinely encountered problems after updating. I want to ask Microsoft: after updating my laptop and desktop to KB5101684 and KB5120249, I'm experiencing issues with file history:

  • Files can still be backed up to the D drive normally.
  • The "Last Backup" time in "File History" is not updating correctly.
  • Newly created or saved Word documents, images, videos, etc., still show "No previous version available" in "Content → Previous Versions".
  • I haven't modified some folders; please change the modification dates yourself.

Both updates state, "This update fixes an issue that affects File History automatic backups to network shares using Server Message Block (SMB). Backups did not work because Windows showed a false 'invalid credentials' error when connecting to SMB shares." I didn't expect the update to cause this problem; dozens of users have reported the same issue. Microsoft, please investigate and fix this. When will it be fixed?

If you have the same problem as me, please leave a comment below.

3 Replies

  • Exactly , last time I ran into this exact same File History log glitch on my desktop right after those cumulative updates dropped. What worked for me Completely resetting the underlying File History engine rather than waiting on a patch. Here is step by  step guide.

    Open File Explorer, go to C:\Users\[YourUsername]\AppData\Local\Microsoft\Windows\FileHistory, and delete everything inside the Configuration folder. Next, go into Settings , System , Storage, turn File History off, and then re add your D drive back as the backup target. 

    Windows will rebuilt the catalog from scratch, which immediatelly fixed the frozen timestamp and restored the right click Previous Versions context menu on my setup.