Knowledge Base
Searching in : Article
ID: AR07J00648
Applies to: NoMachine Client
Added on: 2012-07-30
Last Update: 2015-02-27
What to do if I cannot run a custom rootless session with a NoMachine client on OS X 10.8
NoMachine client v. 4 installed on Mac OS X relies on X11 for supporting custom sessions running single applications.
Starting from Mountain Lion, X11 is no longer included with OS X.
In order to run a custom session from OS X 10.8, it is necessary that you install X11 on your Mac.
For more instructions about how to retrieve and install X11, please refer to Apple support: