Adding Exchange monitoring to existing Virtual Server.

Adding Exchange monitoring to existing Virtual Server.

I have a virtual Exchange 2010 server that was not added explicitly as an Exchange server, but that I'm trying to add Exchange monitoring to after the fact. When attempting to add the Performance Monitor and then choose the Exchange monitors, it kicks me back to the server page with a vague error..

Please enter the UserName/Password details in the screen

Can someone assist?

                New to ADSelfService Plus?