Hi I become on the Nextcloud 23 Security Check this error Message, any other Admin have a Solution for ISPConfig3 . This I have in my Nginx directive for the next cloud web (its only the part of well-known). The Nextclound running not in a subfolder like /nextcloud Code: location ^~ /.well-known { # The following 2 rules are only needed for the user_webfinger app. # Uncomment it if you're planning to use this app. rewrite ^/.well-known/host-meta /public.php?service=host-meta last; rewrite ^/.well-known/host-meta.json /public.php?service=host-meta-json last; rewrite ^/.well-known/webfinger /public.php?service=webfinger last; rewrite ^/.well-known/nodeinfo /public.php?service=nodeinfo last; # The following rule is only needed for the Social app. # Uncomment it if you're planning to use this app. rewrite ^/.well-known/webfinger /public.php?service=webfinger last; location = /.well-known/carddav { return 301 $scheme://$host:$server_port/remote.php/dav; } location = /.well-known/caldav { return 301 $scheme://$host:$server_port/remote.php/dav; } # according to the documentation these two lines are not necessary, but version 21.0.0 will produce warnings in the overview setup check location = /.well-known/webfinger { return 301 /index.php$uri; } } location = /.well-known/nodeinfo { return 301 /index.php$uri; } location ~ /.well-known/acme-challenge { allow all; }