62064: Acronis True Image: Backup fails if Act! software product is misconfigured

Last update: 31-05-2021


All conditions must be true:

  1. Act! software and Microsoft SQL Server are installed
  2. Acronis True Image does not create a backup. If you click the red exclamation mark at the center of the backup screen, the following error message is displayed:
    1. Entire PC and disk/partition backups: Unable to create volume snapshot
    2. File and folder backup: Failed to backup file or folder
  3. The last modified log file at C:\ProgramData\Acronis\TrueImageHome\Logs\ti_demon contains the following text: VSS writer 'SqlServerWriter' with class ID 'A65FAA63-5EA8-4EBC-9DBD-A0C4DB26912A' has failed to process the snapshot


Incorrectly configured Microsoft SQL Server, that comes with Act! software


Change SQL Server(ACT7) service user to Local Service by following the steps below:

  1. Open the Windows Start menu, type compmgmt.msc and press Enter on the keyboard
  2. Expand Services and Applications​ on the left panel
  3. Click on SQL Server Configuration Manager
  4. Locate SQL Server (ACT7).
  5. Change the service logon from Local System to Local Service:
    • Right-click on the SQL Server (ACT7) and select Properties
    • On the Log on tab, select Local Service in the Built-in account drop-down menu, then click OK
  6. Verify that the column "Log On As" displays "NT AUTHORITY\LocalService" for "SQL Server (ACT7)" line as shown below:
  7. Reboot the computer
  8. Launch Acronis True Image, start the backup and see if it now succeeds