I have searched this error until my brain hurts and have not found anything that refers to these errors exactly.
I have Server 2003 R2 Standard Edition SP2 32bit Server. It is NOT SBS and does NOT run Exchange. The Scheduled Task is run as Administrator in a domain environment. System State is not being backed up with this backup. There are no VSS Event ID errors involved. I have re-registered the dll's.
Event Viewer shows Event ID 8018 (Begin Operation) followed 5 minutes 1 second later by Event ID 8019 (End operation. Warnings or errors were encountered. Consult Backup report for more details.
Backup report shows
Active backup destination: File
Media name: "WeeklyUserShare.bkf created 8/25/2010 at 1:01 AM"
Volume shadow copy creation: Attempt 1.
Timeout before function completed
Error returned while creating the volume shadow copy:0xffffffff.
Error returned while creating the volume shadow copy:ffffffff
The operation did not successfully complete.
Scheduled Task shows last result as 0x0 and the file is in the proper backup location on an external hard drive and shows as WeeklyUserShare.bkf with a file size of 2KB and the proper date and time that it ran.
Does anyone have any ideas?