If you have OfficeExpert runnig as a windows servers and the account used (service account) differs from the current logged in user account on the OS level the Outlook Client Simulation will fail

Example:

You are logged in as "User A" on OS level and the Outlook Client is configured with User A but the Windows Service is running with User B (or Network Service

 

 

Solution

Make sure that the same User account is used.