If this issue is encountered on only a single machine, you should try to determine what other program is stopping adclient from coming up.
stop the service
sudo systemctl stop centrifydc
clear the debug logs
sudo /usr/share/centrifydc/bin/addebug clear
start the log
sudo /usr/share centrifydc/bin/addebug on
attemp to start the service
sudo systemctl start centrifydc
check the status
adinfo --mode <= if this does not go "connected" and stays down, then time to review the logs.
Inspect the contents. You will likely pinpoint the issue.
sudo vi /var/log/centrify.log
After you're done, run addebug off. Report your findings.
Note that if you're a commercial customer, you can just open a ticket with support.
Have a great weekend!