VMWare backup failed

Hi all,

I'm using Netbackup 7.6.1.1 on Windows Server 2008 R2. I'm doing backup for virtual machines using vCenter 5.5u2.

Before the issue, Netbackup was 7.5 and VMWare was 5.0u1, since the upgrades i'm facing many backup problems, some backups fails for different reasons, and other hangs (which result in failure of the next planned backup once the schedule window finishes)

We are facing the issue since 1 month and the pressure from the customer is becoming ... you know