A recent Windows 11 security update is creating new headaches for users, with reports that update KB5083769 is interfering with several popular backup applications.
Another issue tied to KB5083769
Released by Microsoft as a security-focused patch, KB5083769 was intended to address vulnerabilities in Windows 11. However, users have already reported multiple problems, including:
- Unexpected boot loops
- BitLocker recovery lockouts
- Remote Desktop connectivity issues
Now, backup software conflicts are being added to the list.
Backup tools affected
According to reports, the update appears to break compatibility with several third-party backup platforms, including:
- Acronis Cyber Protect Cloud
- Macrium Reflect
- NinjaOne Backup
- UrBackup Server
These tools may fail to create or restore backups correctly after the update is installed.
VSS bug suspected
The issue is believed to involve the Windows Volume Shadow Copy Service (VSS), which creates snapshot copies of files while Windows is running.
VSS is widely used by backup software to perform live system backups without interrupting normal operation.
Temporary workaround
Reports suggest that uninstalling update KB5083769 restores backup functionality for affected users.
However, removing the update could also leave systems without the latest security protections.
Waiting for a fix
At the moment, Microsoft has not released an official patch or timeline for resolving the conflict.
Users relying on backup software may want to monitor support pages from both Microsoft and backup vendors for compatibility updates.