When attempting to start QuickBooks Contact Sync from within Microsoft(r) Outlook and the Canadian version of QuickBooks Desktop is installed and running, the following message appears:
Contact Sync Error: There was an error connecting to QuickBooks. Contact Sync was unable to establish a connection to QuickBooks. Try restarting QuickBooks Desktop and Outlook and try again.
How to tell if you are running the Canadian Version of QuickBooks Desktop:
If you are getting the error with the US Version of QuickBooks: