How should I setup sharing/directory permissions to allow the following to work:

1. VMHost - Hyper-V partition (not part of domain)
2. ADServer - Active Directory Domain Controller running as guest VM on VMHost
3. \VMHost\Updates disk share for WSUS to put the updates and other local files
4. Problem is what permissions do I need to give to \VMHost\Updates to allow WSUS to work with this directory to avoid "The WSUS content directory is not accessible" error which I am currently seeing.

As far as I can tell WSUS runs as "domain/Network Service" account. Question is without adding VMHost to the domain how do I give that user appropriate permissions to this directory?

Is there a way that VMHost can be told to trust ADServer and then be able to use users accounts from there?

Sort of relates to my other post here: Win 2012 Domain controller VM, should the Hyper-V host be part of the domain?

Thanks, Nick