Backup of VMware virtual machine stays in pre-processing time for a long time before creating a snapshot and starting the backup. Pre-processing time keeps on increasing for future backups untill the Backup Exec server is rebooted.
A hotfix is now available for this issue in the current version(s) of the product(s) mentioned in this article. Refer to the Hotfix link under Related Documents at the end of this article to obtain the hotfix needed to resolve the issue.
Backup Exec 2012 Rev 1798 Service Pack 2 (TECH203155)