Pcworld iconPcworldSep 22, 2026 ~1 min source read

Windows’ September update breaks File History. The fix is a rollback

Many users who have installed the latest September security patches for Windows have found that the "File History" feature no longer works—deleted or corrupted files can no longer be recovered. File History automatically saves copies of files, allowing users to recover accidentally deleted or corrupted files using older versions that were stored hours, days, or weeks ago.

Windows’ September update breaks File History. The fix is a rollback

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Many users who have installed the latest September security patches for Windows have found that the "File History" feature no longer works—deleted or corrupted files can no longer be recovered.

File History automatically saves copies of files, allowing users to recover accidentally deleted or corrupted files using older versions that were stored hours, days, or weeks ago.

According to Microsoft, the issue is due to a bug that occurs in all current versions of Windows 10 and 11, including 21H2, 22H2, 23H2, 24H2, 25H2, and 26H1.

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The useful part

Many users who have installed the latest September security patches for Windows have found that the "File History" feature no longer works—deleted or corrupted files can no longer be recovered. File History automatically saves copies of files, allowing users to recover accidentally deleted or corrupted files using older versions that were stored hours, days, or weeks ago. By default, File History backs up all folders in the user profile (Documents, Music, Pictures, Videos, and Desktop) to an external drive, such as a USB flash drive or a network attached storage (NAS) device.

How it works

  • File History, available through Control Panel > System and Security > File History, is used to back up files to an external drive or network location.
  • According to Microsoft, the issue is due to a bug that occurs in all current versions of Windows 10 and 11, including 21H2, 22H2, 23H2, 24H2, 25H2, and 26H1.
  • After installing the September 2026 Windows security update, some customers using File History, might be unable to create or update backups.

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