You have just added a Hyper-V host in the VMM 2008 Admin console.  The host has all applicable updates installed.  Yet, it still displays as “Needs Attention” in the Admin Console… how to fix?

Hmm…  I have been researching this for awhile.  Although you would not really know it, the host requires an upgrade to the Background Intelligent Transfer Service (BITS).

Updates for Hyper-V:

KB956589 http://www.microsoft.com/downloads/details.aspx?FamilyID=FD44B4E3-2DCC-4299-B345-BC09A9A37B60&displaylang=en

KB956774 http://www.microsoft.com/downloads/details.aspx?FamilyId=9EC9DBB9-82AD-4D34-9267-76A0126A8F18&displaylang=en

These updates will resolve the issue.  KB956589 and KB956775 require separate reboots, trying to install a second update before restarting will generate the error that only 1 instance may run at a time…

Incidentally, I read about this solution on Mike’s Virtualization blog:

http://blogs.technet.com/mbriggs/archive/2009/01/29/host-needs-attention.aspx

Once you have restarted the system after both updates, within the Admin Console Refresh the Host:

You should now be ok:

Problem solved!

Read the complete post at http://owsug.ca/blogs/brad/archive/2009/04/16/VMM2008-Hyper_2D00_V-Host-displays-as-_1C20_Needs-Attention_1D20_-in-Admin-console.aspx