edit: its working now i was missing the following pakets: libapache2-mod-fcgid apache2-suexec-custom php7.4-xml php-cgi fresh installed Ubuntu 20.04.1 LTS with fresh ispconfig installed... when i want to login to ispconfig it shows Apache2 Ubuntu Default Page Code: root@isp:~# php htf-common-issues.php --debug ##### SERVER ##### IP-address (as per hostname): 192.x.x.x [WARN] could not determine server's ip address by ifconfig [INFO] OS version is Ubuntu 20.04.1 LTS [INFO] ISPConfig is installed. ##### ISPCONFIG ##### ISPConfig version is 3.2 mysql: [Warning] Using a password on the command line interface can be insecure. ##### VERSION CHECK ##### [INFO] php (cli) version is 7.4.3 ##### PORT CHECK ##### [WARN] Port 143 (IMAP server) seems NOT to be listening [WARN] Port 993 (IMAP server SSL) seems NOT to be listening [WARN] Port 110 (POP3 server) seems NOT to be listening [WARN] Port 995 (POP3 server SSL) seems NOT to be listening [WARN] Port 465 (SMTP server SSL) seems NOT to be listening [WARN] Port 21 (FTP server) seems NOT to be listening [WARN] Port 22 (SSH server) seems NOT to be listening ##### MAIL SERVER CHECK ##### [WARN] I found no "submission" entry in your postfix master.cf [INFO] this is not critical, but if you want to offer port 587 for smtp connections you have to enable this. [WARN] I found no "smtps" entry in your postfix master.cf [INFO] this is not critical, but if you want to offer SSL for smtp (not TLS) connections you have to enable this. ##### RUNNING SERVER PROCESSES ##### [INFO] I found the following web server(s): Apache 2 (PID 960) [INFO] I found the following mail server(s): Postfix (PID 1038) [WARN] I could not determine which pop3 server is running. [WARN] I could not determine which imap server is running. [WARN] I could not determine which ftp server is running. ##### LISTENING PORTS ##### (only () Local (Address) 127.0.0.53:53 (693/systemd-resolve) 0.0.0.0:25 (1038/master) 127.0.0.1:6010 (1374/sshd:) 127.0.0.1:3306 (1135/mysqld) 0.0.0.0:2222 (840/sshd:) :::25 (1038/master) ::1:6010 (1374/sshd:) :::443 (960/apache2) :::33060 (1135/mysqld) :::2222 (840/sshd:) :::8080 (960/apache2) :::80 (960/apache2) :::8081 (960/apache2) ##### IPTABLES ##### Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination Code: root@isp:~# apache2ctl -S AH00548: NameVirtualHost has no effect and will be removed in the next release /etc/apache2/sites-enabled/000-ispconfig.vhost:7 VirtualHost configuration: *:8081 isp.xxxus.to (/etc/apache2/sites-enabled/000-apps.vhost:9) *:80 isp.xxxus.to (/etc/apache2/sites-enabled/000-default.conf:1) *:8080 isp.xxxus.to (/etc/apache2/sites-enabled/000-ispconfig.vhost:9) ServerRoot: "/etc/apache2" Main DocumentRoot: "/var/www/html" Main ErrorLog: "/var/log/apache2/error.log" Mutex ssl-stapling-refresh: using_defaults Mutex ssl-stapling: using_defaults Mutex ssl-cache: using_defaults Mutex default: dir="/var/run/apache2/" mechanism=default Mutex mpm-accept: using_defaults Mutex watchdog-callback: using_defaults PidFile: "/var/run/apache2/apache2.pid" Define: DUMP_VHOSTS Define: DUMP_RUN_CFG User: name="www-data" id=33 Group: name="www-data" id=33 any idea is very welcome i really don´t get it why the Apache2 Ubuntu Default Page shows and not the ispconfig login window had ISPconfig running on an older server some years ago... i thought its easy to install... now i spend more than 4 hours with this (googling but not finding anything helpful)