In case you need it, when deploying VEEAM Backup for Hyper-V, here is the list of recommended hotfixes :

Challenge:

Backup and replication activities cause Hyper-V host, cluster and VM instability issues resulting in Hyper-V host crash (BSOD), cluster resource failure, VM crash, VM freeze, VM suspend.

 

Cause:

These issues are typically caused by known bugs in the Microsoft code. We highly recommend that you install the following Microsoft hotfixes in order to improve overall hypervisor stability and cluster resiliency.

http://www.veeam.com/kb1838