How to fix your Windows File History if the September update broke it

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

Windows 11’s File History bug is fixed, but it won’t install on its own

Microsoft confirmed a bug in Windows updates KB5124008 and KB5122878 is breaking File History backups on Windows 11 and 10.

Windows 11’s audio bugs won’t be fixed until October

Microsoft says Windows 11 audio bugs from September's update will remain unresolved until October 13th. AMD GPU and File History issues also persist.
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Microsoft September updates break File History backups

Microsoft confirms File History backups are silently failing after September 2026 Windows updates. Here's what is affected and how to check your system for errors.