CRM Outlook Client Fails

You may seem all set after installing CRM client for Outlook and configuring it, but all attempts to run Outlook with CRM client fails with :

MS CRM webservice hoster has encountered a problem and needs to close. We are sorry for the inconvenience.

Application Event log entry :

MSCRMAddin event 5911 (info), .NET Runtime 2.0 error reporting event1000, MSCRMAddin event 5909, MSCRMAddin event 16940, MSCRMAddin event 16930, MSCRMAddin event5903.

This is because CRM client for Outlook is not comfortable when you're an Admin User. So let it have it's way and change the users Account Access mode to Full User.