I’ve had a few questions from partners on what this message means when you try to sync to Outlook from Dynamics AX.
Method 'add' in COM object of class '_Items' returned error code 0x80004004 (<unknown>) which means: <unknown>.
Generally this is a result of Outlook not having access to the server. On the demo images this is usually a result of the services not being started. So you will need to make sure you have these two services started to send email.
So click Start\Administration Tools\Services. Locate these services and start them.
This note on configuring the services on the demo VMs will help you understand which services do what. http://blogs.msdn.com/lcash/archive/2009/04/03/tuning-the-startup-and-memory-usage-on-ax-srv-01.aspx
Original post at http://blogs.msdn.com/lcash/