I have seen this documented in a couple of places now – but I also see a number of people still wondering why this is happening and how to stop it, so I thought I would post it here too. When you first add a Hyper-V host to SCVMM 2008 you may see a warning icon displayed with the message “Needs Attention” and “Virtualization service version status is not up-to-date”. To get rid of this alert there are three updates that need to be applied to the Hyper-V server:
This is the RTM update for Hyper-V
This is an update to Hyper-V specifically for SCVMM compatibility
This is an update to the Background Intelligent Transfer Service (BITS) client in Windows Server 2008
Once you have these three updates installed everything should come up green.