GoKawiilMicrosoft patches File History backup crashes via optional Windows 11 updates
Microsoft has resolved a bug that stopped File History from backing up or restoring files to external drives or network locations after the September 2026 security update. The fix ships in the optional cumulative updates KB5124006 and KB5124010 for Windows 11 26H1 and 24H2/25H2 respectively. Affected users had seen crash events referencing FileHistory.exe, false 'Reconnect your drive' prompts, and backups that stopped updating.
GoKawiil's interpretation of the reporting above, not reported fact.
The bug undermined a core recovery tool many users rely on to restore lost or corrupted files, potentially leaving backups silently stale without users realizing it. Because the fix is currently only in optional preview updates, affected users must manually install it rather than wait for automatic patching, which could delay resolution for less technical users.
- File History backups broke after the September 2026 Windows security update on multiple Windows 10 and 11 versions.
- Microsoft's fix is available via optional cumulative updates KB5124006 (Windows 11 26H1) and KB5124010 (24H2/25H2).
- Symptoms included crash errors, false drive-disconnect alerts, and backup timestamps failing to update.
WD My Passport 2TB External Hard Drive — Since File History relies on an external drive to keep your Documents, Pictures, and other folders safe, having a reliable portable hard drive is essential. The WD My Passport is a compact, plug-and-play option that works great with Windows backup tools once this bug is patched. It's a simple way to make sure your files have a real backup destination beyond just your PC's internal storage.
See WD My Passport 2TB External Hard Drive on Amazon → Affiliate link — we may earn a commission on purchases, at no extra cost to you. Product picked by AI based on this article; it is not a tested recommendation.Source: bleepingcomputer.com, 2026-09-24
Published there as: “Microsoft fixes bug that broke Windows File History backup feature”
Read the original report → The summary and analysis above are GoKawiil's own, written from reporting by the source above. Facts and quotes belong to the original publisher.