Backup VSS error 8193 - Resolved

This is regarding the problem task id # xxxxxxxx on server xxxxxxxx  for backup failure incident caused by VSS error - event id 8193

Action Taken:

We checked and found that multiple temporary profiles (invalid entries) in the following location >> HKLM\Software\Microsoft\Windows NT\CurrentVersion\ProfileList

The SID associated with the temp profile cannot be resolved. This is due to a “.bak” entry inside the following registry location. Removing the invalid entries from the registry will solve the problem and this is one of the reason for vss error – event id 8193

Resolution :

1.            Log in to the  problematic server xxxxxxxxx)  and open the Registry Editor

2.            Browse to HKLM\Software\Microsoft\Windows NT\CurrentVersion\ProfileList

3.            Find the entries that have a ".bak" value appended. (.bak – Temp profile is one of the reason for vss error / backup failure and this issue will happen while trying to resolve the SID of the writer)

4.            Backup the entire registry, and then delete all the entries with ".bak"   >>>> (Important)

5.            Reboot the problematic machine

6.            Re-try the backup.