KB ID : 115121
Products :
Published : Dec. 12, 2019
Created : Dec. 12, 2019
Last Modified : Dec. 12, 2019


Vembu BDR uses Volume Shadow Copy Service(VSS) for taking snapshots. The above alert usually throws when the VSS is unable to run due to another instance of VSS already running.

  • Microsoft's native snapshot manager is only able to perform one snapshot at a time. If a snapshot process is already running when the backup job starts, the backup job could fail.
  • VSS conflicts: Running more than one backups at a time may try to take a snapshot at the same time which will lead to VSS conflict and will cause the backups to fail.


If you have more than one backup application installed on your machine, disable all the other applications and try running the backup job again.

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