Host: HYPER-V R2 installed in a WORGROUP .
Guest1: Windows Server 2008 R2 x64 STD Edition (auto restart 30 seconds after host boots)
Guest2: Windows Server 2003 (auto restart 60 seconds after host boots)
This machine has been working fine for ages, but all of a sudden, over the weekend GUEST2 collapsed and I could no longer access it from HYPER-V Manager (Installed on my Windows 7 machine); it just dissapeared. I decided to reboot the HOST.
After the REBOOT, I can no longer even PING the HOST Machine, I can however Remote Desktop to it without a problem. I can also no longer REMOTE DESKTOP to Guest 1 or PING Guest 1. My HYPER-V Manager on my Windows 7 machine now says - "The Virtual Machine Management Service is not available"
The only change I think I did, which was a couple of days ago, after which everything had been working was - Allowing Firewall to be remotely managed via another machine. For this I followed this article here - http://www.petri.co.il/remotely-managing-windows-2008-server-core-firewall.htm
Now I can no longer access the firewall from my Windows 7 machine which is a bit wierd.
I still think it is a firewall issue, so would someone please help me diagnose the problem and help me through the resolution. I want everything returned to normal asap.