The Backup Completed, but Some Files Were Skipped

For a month or so, I was doing backups of our Domain Controllers using the Microsoft Backup agent, instead of our usual Veritas 9.x . After a few days, I noticed the following errors with Event ID: 8001

The Backup Completed, but Some Files Were Skipped
Warning: Unable to open "c:\windows\SYSVOL\domain\DO_NOT_REMOVE_NtFrs_PreInstall_Directory" - skipped.
Reason: The process cannot access the file because it is being used by another process.

This problem occurs because the Windows Backup program tries to back up the DO_NOT_REMOVE_NtFrs_PreInstall_Directory folder during the System State backup. To fix this nagging message as it is will not jeapordize the backup I called Microsoft, and they issues a HOTFIX for it.

Feel free to email me for this patch if you're having the same problem.