Microsoft: September updates break File History backup feature
Microsoft's September 2026 security updates are breaking the Windows File History backup feature on some systems.
Microsoft warned that the September 2026 Windows security updates can cause the built-in File History backup feature to fail on some systems. Users may experience application crashes, incorrect drive connection messages, and an inability to create or update backups. This is the latest in a series of bugs introduced by the update, which have already required out-of-band fixes for Remote Desktop, Hyper-V, and USB audio issues.
- Microsoft's September 2026 security updates can break the Windows File History backup feature.
- Affected systems may see crash events, incorrect 'Reconnect your drive' messages, and non-updating timestamps.
- This is part of a series of issues caused by the September updates, including prior Remote Desktop and Hyper-V failures.
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From the original article
2 min read at bleepingcomputer.com
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. [...]
By Sergiu Gatlan · bleepingcomputer.com
A short excerpt; the article and its images belong to the publisher. Summary, key facts and assessment above are AI-written from the article and can be wrong.