I’m always forgetting how to do this and getting an error like the following:
The explanation at http://virtuallyaware.wordpress.com/2008/06/23/hyper-v-constrained-delegation-of-authority-remote-mounting-of-iso-with-management-console/ is perfect, but in case it ever goes away, here’s my summary:
In ADUC, find the Hyper-V server, properties, Delegation Tab:
Add the computer which will host the shared ISO images and OK.
Wait a minute of two – trust me!
Now you’re good to go.