I have a Windows 2008 Server with Hyper-V installed, and a couple of VMs.
All was working properly until I tried upgrading BIOS. All of a sudden I get permission denied when attempting to start any VM, saying 'general access denied error' on the vhd file.
Also SYSTEM, and NETWORK SERVICE accounts have full access.
How can I fix this issue?
*Edit: Even creating a new virtual machine + disk is giving this error, but I can inspect an existing disk, and even expand it without problems. Also cdrom device is giving the same error. If I remove all harddrives and cdrom devices from settings, I may power on the VM without any 'General access denied error'.
*Edit2: I attempted to completely remove Hyper-V and reinnstall it again - same result.