http://blogs.msdn.com/b/emeadaxsupport/archive/2011/10/28/microsoft-dynamics-ax-2012-troubleshooting-help-server-problems.aspxSome time ago we get several problems with Help Server. Simply when we wanted to access help from Microsoft Dynamics Ax 2012 client we get following problems: 1. Error: Unable to contact server http://ServerName:Port/DynamicsAXHelpServer/HelpService.svcen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)