Rest-API not available / The Univention Management Console Web Server could not be reached

On my UCS Master (4.4.6) i can access the REST-API via

I created a copy of that virtual machine and assigned a new IP adress to that the new master-testsystem via system - network settings


restarted the master, executed ucr commit, got the newest updates but the rest-api is not shown -> No API definition provided. -> {“status”: 503, “message”: “The Univention Management Console Web Server could not be reached. Please restart it or try again later.”}

root@master:~# /etc/init.d/univention-management-console-web-server restart
[ ok ] Restarting univention-management-console-web-server (via systemctl): univention-management-console-web-server.service.

root@master:~# cat /var/run/
root@master:~# ps aux | grep 802
root 802 0.2 0.8 666572 69812 ? S 15:49 0:01 /usr/bin/python2.7 /usr/sbin/univention-management-console-server start
root 2929 0.0 0.0 14316 964 pts/0 S+ 15:56 0:00 grep 802

i dont see my issue here, do you have any hints or ideas where to look how to access the rest-api on that system?

found the issue.
directory/manager/rest/server/address contained the wrong ip adrress ( instead of After unsetting the variable, so that the default ( is used again, umc and rest were availbale again