Virtual Machine Manager

I was working in the Virtual Machine Manager the other day and noticed that two of my Hyper-V Host machines (the bare-metal boxes) were listed as 'needs attention.' I went to each machine and tried to run Windows Update but that didn't yield any unapplied updates so I dug further. Soon I came across this article on Microsoft's KB. I went into VMM's Administration section, looked at the managed machines, right clicked them and chose 'Update Client'. That took care of it!