Microsoft Dynamics NAV 2009 Outlook Synchronization - Connection Timeout Error

Outlook Synchronization Timeout Issue:

Running Microsoft Dynamics NAV 2009 SP1 in a three tier environmen:

  • Application server
  • SQL Database Server
  • Clients

Outlook synchronization has been installed, NAS has been installed and running. In Outlook, Connection connects perfectly, but when I go to Synch I get the following error:

A Microsoft Dynamics NAV Synchronization Add-In Error Occurred
The response from Microsoft Dynamics NAV Has not been received because of connection timeout. Please check if the Microsoft Dynamics NAV Server is running and try again later. If the problem persists increase the timeout value in the configuration file. Please contact your system administrator.

Troubleshooting:

  • Uninstalled/re-installed Outlook Synch
  • Uninstalled/re-installed NAS
  • Checked Microsoft Dynamics NAV Server is running – it is!
  • Increased the timeout value in the configuration file

I have literally tried everything that I can think of, looking for a little help.

Thanks!