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SnapManager for Exchange backup failure due to "Asynchronous call DoSnapshotSet" timed out

Last Updated:

Applies to

  • Microsoft Windows 2008/2012 Standalone/Database Availability Group (DAG)
  • SnapManager for Exchange (SME) 7.1/7.2
  • SnapDrive for Windows (SDW) 7.1.x



During a backup operation in SME, the Creating the Snapshot procedure reports a timeout at 600 seconds (10 minutes).


  1. Backup Report:
    [19:01:55.671]  Starting asynchronous DoSnapshotSet. Please wait...
    [19:01:56.685]  Operation pending, please wait...(1)
    [19:11:54.964]  Operation pending, please wait...(119)
    [19:11:55.978]  Asynchronous call DoSnapshotSet timed out!
    [19:11:55.978]  The call for DoSnapshotSet was cancelled.
    [19:11:55.978]  Failed to perform VSS snapshot, aborting...
    [19:11:56.181]  Backup is aborted.
  2. MS Event logs:
    Information SnapManager for Exchange 200 SnapManager VSS asynchronous DoSnapshotSet operation timed out after 600 seconds. The operation was cancelled.

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