System State backup errors when using Locked File Agent
If you are using the Locked File Agent for your file-by-file backup set that includes the system state, please be sure to enable the "do not use Volume ShadowCopy Service" option in the backup set.
This is because for some reason, VSS is unable to handle both requests during the backup; that is, it cannot freeze the volume for backup and backup the registry data. Making this change resolves the issue.
Technical Support Manager