Since I updated my vCenter Server Appliance, and ESXi host. I've been unable to back up my Windows Server 2012 R2 based Domain Controller. VMware vCenter Appliance 5.5 Update 2d (Build 2442329) and ESXi 5.5.0 (Build 2403361) January 27th Patch
This worked perfectly before the vCenter and host upgrade, but since this is in my home lab, I also did a bunch of other updates at the same time, which is why I didn't immediately connect the backup issues with the vCenter update. To be sure, and eliminate as many possible causes as possible, I ditched my old Veeam VM, and set up a new Veeam Backup & Replication server, patched it with Patch 1 and re-created my jobs - After all, this is in a lab environment.

I am running Veeam B&R 8p1 (8.0.0.917) on a Windows Server 2012 R2 VM, in Appliance (Hot-add mode). What happens when I try to perform a backup, is that the VMware snapshot is created (I see this on the vCenter), the VMs disk is added to the Veeam VM and then it just hangs there for hours. I am unable to stop the job, that process hangs as well. I can't even RDP to the VM at this point, and to get to it I have to use the vSphere console.
To "recover" from this, I have to power-off the Veeam B&R VM, disconnect the backup source vmdk from the Veeam VM, delete the snapshots on the source VM and power on the Veeam VM again, basically undoing what Veeam B&R did in the first place.
Has anyone else upgraded their vCSA yet, and got B&R8 working with it?