Microsoft Confirms September 2026 Windows Updates Break File History Backups
Microsoft September 2026 updates break Windows File History backups, prompting users to manually verify backup status.
Microsoft confirmed that September 2026 Windows security updates cause a regression where File History fails to create or update backups on some Windows 10 and 11 systems. Affected users may see persistent 'Reconnect your drive' warnings and outdated 'Last Backup' timestamps. Microsoft is developing a fix for a future update and advises users to validate backup contents independently.
45