NAV outlook Sync using Web services - error

Votuc

Hi,

I followed the walkthrough http://msdn.microsoft.com/en-us/library/dd338966.aspx and set up a test ID for Outlook Sync. It works fine. Then I added the rest of the users at the company and I am getting this error on most of the machines:

synchronization is not set up for <Navision user name> in microsoft dynamics NAV

The Schema cannot be retrieved. Please check if the connection parameters are correct and the server is correctly set up and running.

Did I miss a step? All users are set up in the Departments/Administration/Application Setup/Microsoft Office Outlook Integration/Outlook Synch. User Setup table.