SCVMM - Go with the exception's own 'message'

 A 401 exception can be returned by the WinRM service on the SCVMM box for reasons other than a user has entered invalid credentials. For example, if we set the winrm/config/service/AllowUnencrypted setting on the Windows server to 'FALSE' we get the same 401 error.
It is more accurate and descriptive to display the exception's own message with the string "Check credentials and WinRM configuration settings" appended.

https://bugzilla.redhat.com/show_bug.cgi?id=1131236