Using latest version 4.5.0_1 free. OS is Windows Server 2008 R2 SP1
There were no errors thrown during the installation. No icon appears in the system tray.
GUI shows Service not started. Start, and it will die in a few seconds.
There are errors in the log files under C:\ProgramData\NoMachine\var\log.
nxdevice.log (series of firewall rule errors)
[3016][3040] 11:48:13 920 ERROR: Cannot add firewall rule.
Error code is : 0x800706d9
[3676][3680] 11:48:30 469 ERROR: Cannot remove preinstalled driver package.
Winapi code is : 2.
nxservice.log
3664 3016 11:48:45 080.088 nxserviceExecuteProcess: ERROR! Read failed.
3664 3016 11:48:45 080.088 nxserviceExecuteProcess: Error is 32, Broken pipe.
3664 3820 11:48:55 080.627 nxserviceCleanProcess: WARNING! Child refused to exit and will be terminated.
Results of running C:\Program Files (x86)\NoMachine\bin\nxserver.exe –startup
NX> 161 Service: nxserver already running.
NX> 500 ERROR: Cannot start service: nxd.
NX> 500 ERROR: Cannot start service: nxnode.
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