GoKawiilMicrosoft confirms September 2026 Windows updates break File History backups
Microsoft has acknowledged that its September 2026 security updates cause the legacy File History backup tool to fail on multiple Windows 10 and 11 versions. Affected PCs may show FileHistory.exe crashes in Event Viewer, false 'Reconnect your drive' warnings, and backups that stop updating even though the external or network drive is connected properly.
GoKawiil's interpretation of the reporting above, not reported fact.
File History remains a common way for users to protect personal files like Documents and Pictures, so a silent failure could leave people unknowingly unprotected against accidental deletion or corruption. The bug spans a wide range of Windows releases, including LTSC enterprise versions, making it a broad reliability concern until Microsoft ships a fix.
- File History backups may silently fail after the September 2026 security update.
- Symptoms include app crashes, false drive-reconnect prompts, and stale backup timestamps.
- Impacted versions include Windows 10 21H2+, LTSC 2016/2019, and Windows 11 23H2 and later.
WD My Passport External Hard Drive — Since Windows File History is currently having issues backing up to external drives, having a reliable portable hard drive on hand is still essential for safeguarding your files. The WD My Passport is a popular, plug-and-play external drive that works well for manual backups or once Microsoft resolves the File History bug. It's a smart, low-fuss way to keep copies of your Documents, Pictures, and Videos safe outside your PC.
See WD My Passport 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, 2026-09-21
Published there as: “Microsoft: September updates break File History backup feature”
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