This page provides information on installing the V-Ray License Server.
If you are running the V-Ray license server on a different machine, you need to tell V-Ray where to look for it. This section describes how to do that on each operating system supported in V-Ray for Revit.
Run the V-Ray license client configuration utility from Windows Start > All Programs > Chaos Group > V-Ray for Revit > V-Ray License Server Configuration.
This will show you the window below, where you can specify the IP address of the machine that is running the V-Ray License Server. Please do not change the connection port that is set by default to 30304.
For example, if the license server machine has IP address of 10.0.0.100, you have to put that address in the License server field, under the tab Primary license server.