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.