Hyper-V VM failed to start - General access denied errror

[guest]

When i'm trying start my newly created virtual machine I've got error:



VMMS Account does not have sufficient privilege to open attachment ".....\SRVVirt.vhd"



I am logged in as administrator, Services ara running with following accounts :



Hyper-V Image Management Service - Network Service

Hyper-V Networking Management Service - Local System

Hyper-V Virtual machine managemet - Local System



Operating system is clear installation of Windows Server Standard 2008 RTM with Hyper-V



Installed roles :



Application server

File Services

Hyper-V

Web Server



any suggestions on how to overcome this issue and get the hypervisor running would be greatly appreciated.

[guest]

I had the same problem.

My solution was: I gave the *.vhd file the permission 'full' for the group 'Users'

[guest]

It turns out that There are 3 Hyper-V services. 2 of them are Logon as System, and one as Network Service. When looking at the vhd, the System has full control, but Network Service doesn't.



After adding Network Service -> Full Control, the VM Starts. Maybe this is more secure than All Users -> Full Control? I don't know.