🚨September Patch Breaks Windows File History
Your backups are at risk after the latest update
TL;DR
Microsoft's September security update can break File History in Windows, leaving backups vulnerable. A fix is available but not for all versions. Check Event Viewer for issues.
Microsoft's September Patch Tuesday update can break File History in Windows, leaving backups vulnerable. If you rely on File History to back up and recover important files, you might see issues like a message to reconnect your drive or errors stating no previous version is available. This affects all current versions of Windows 11 and Windows 10 with Extended Security Updates. A fix is available through a new optional preview update, but it doesn't apply to Windows 11 23H2 or Windows 10. Check Event Viewer for application crash events referencing FileHistory.exe or KERNELBASE.dll to see if you're affected.
Key Points
September Patch Tuesday update breaks File History in Windows, leaving backups vulnerable.
Fix available through new optional preview update, but not for Windows 11 23H2 or Windows 10.
Check Event Viewer for application crash events referencing FileHistory.exe or KERNELBASE.dll.
Windows 11 26H1 users find KB5124006, while 25H2 and 24H2 users find KB5124010.
Microsoft working on fix for Windows 11 23H2 and Windows 10, to be released in future update.
Why It Matters
If you're using File History to back up and recover important files on Windows 11 26H1, 25H2, or 24H2, the September Patch Tuesday update can break your backups. Check Event Viewer for issues and grab the optional preview update to fix it. Microsoft is working on a fix for Windows 11 23H2 and Windows 10, but it's not ready yet.
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