I was investigating as to why I had a VM that was not registering with the DDC during a morning check. When I checked the XenCenter console I observed this message:

After some investigation I found I was not the only one having this issue:

http://forums.citrix.com/thread.jspa?threadID=305300

Based on the advice given in the forum I found that in  DHCP the IP was being assigned but eventually the BSOD was happening.

I could not locate another VM with the same IP. So to correct issue I:

• Deleted the above IP assigned in DHCP
• I then created a reservation for the VM by doing a standard reservation in DHCP:

• Once I did this I restarted the VM and the Desktop resumed normal operation.
• As well based on the user forum I also changed the DHCP scope to an Unlimited lease time.