OSX

Launch the Terminal from Utilities and type the following command:

• sudo launchctl load -w /Library/LaunchDaemons/com.sidefx.sesinetd.plist

You will be prompted for a password. This is your password for the machine.
This will clear the disabled flag for the license server daemon.

Fedora/RedHat/CentOS

The culprit is most likely SELinux. You can create a policy for sesinetd or put SELinux into permissive mode in the SELinux configuration file.

Other

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