Hello,
I have two Windows 2008 x64 servers, running Hyper-V. I have about 15 VM's on each server. I manage the VM's all through the Hyper-V Manager. When I try to connect to Hyper-V Manager and manage my VM's I get "Connecting to Virtual Machine Management Service." This times out after a few minutes and then the Hyper-V Manager displays: The operation on computer 'localhost' failed.
This happens about 2-3 weeks after a reboot. The only fix I have found is to reboot the server, but since these are production servers this is kind of a pain.