Nagios Support Forum

I failed to correct the errors in CCM. They came back always.
Uninstalled Nagios XI with the script and reinstalled it.
Now it works. I used for the reinstall the "online" installer, not the "offline tarballs", without any further settings (proxy was set earlier both in the system and /etc/wgetrc).

Thanks for every help!
The thread can be terminated.

Sounds good - glad to hear you got it working!

Closing this one out.