In a Microsoft Exchange Server 2007 cluster environment, you use a third-party backup application to perform Volume Shadow Copy Service (VSS) Exchange backup operation. In this situation, the backup operation fails occasionally. Additionally, the following event is generated in Application log:

Additionally, you may receive the following error message on the backup application:

0xe000037b - Using the job settings, Backup Exec attempted to back up the passive copy of the Exchange database. However, the passive copy was not available after the Microsoft Volume Shadow Copy Service (VSS) snapshot was performed. Try to run the job again.


This problem occurs because Exchange Server 2007 returns False after it incorrectly configures the VSS writer error to VSS_E_WRITERERROR_RETRYABLE during the backup operation.


To resolve this problem, install the following update rollup:

2279665 Description of Update Rollup 1 for Exchange Server 2007 Service Pack 3


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

More Information

For more information about the VssWriter class, visit the following Microsoft website:

General information about the VssWriter class

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