Our SBS 2003 backup fails with the following message in the log:
Backup Runner started.
LogonUser failed. (0x80070569)
NTBackup finished the backup with errors.
For more information about failed backups, see the article on troubleshooting your backup at the following Web page: http://go.microsoft.com/fwlink/?LinkId=18414
Backup ended at Saturday, July 22, 2006 10:27 AM
Backup error finished with error code 0X80070569
I have several SBS 2003 installations that I have access to, and all work except this one. My research has found that the user SYSTEM has to have "Log on as a service" and "Log on as a batch job" rights in Default Domain Controllers Security Settings | Local Policies | User Rights Assignments.
On those that work, SYSTEM is NOT listed in these policies as having this right. When I compare settings on those that work and the one where it does not, I cannot find a difference, yet the SBS 2003 backup will not run and will give the above message within a minute of starting, whether it is scheduled or started manually.
Also, I see where the user that runs the backup cannot be a member of the Mobile users or Remote Security Operators groups, since these groups deny log in as a service. This is not the case on the SBS 2003 installation that can't start the SBS 2003 backup.
The NT Backup runs without difficulty.
Someone please give me something else to go on!