AX 2012 R2 Demo - Help Server Issue

If you have installed AX 2012 R2 Demo Image to Hyper-V and received the following error message while opening help

"The location of the help server has not been specified. Contact your system administrator for assistance"

you need the set the "Help Service URL" in Help System Parameters - under System Administration > SetUp > System. The typical help service URL is "http://<host:port>/DynamicsAX6HelpServer/HelpService.svc" on Port 80. The host on the R2 Image is "DynamicsHelpServer".