In Backup Exec 2012 enumerating Enterprise Vault (EV) agent backup selection will hang on EV site if Enterprise Vault has a Vault Store Group (VSG) named VaultStoreGroups
Enterprise vault has a Vault Store Group named VaultStoreGroups.
This issue is resolved in Backup Exec 2014 or later versions.
To resolve this issue and receive the new Backup Exec improvements please upgrade to the current version of Backup Exec.
NOTE: Symantec continues to focus on the current release and future releases, there are no plans to address this issue by way of a patch or hotfix in earlier versions of the software at the present time. Please contact your Symantec Sales representative or the Symantec Partner for upgrade information including upgrade eligibility to the release containing the resolution for this issue. For information on how to contact Symantec Sales, please see www.symantec.com