It seems there is no connection between the client's creation of database users and databases. I only can created database users and databases within the Phpmyadmin by another user there, not by the client within ISPconfig3. Please see the screenshots attached. My server IP is 22.214.171.124. I do not install mail and dns. My system is Ubuntu 20.04.02. It seems the following test 'Access denied for user 'root'@'localhost'' is the cause for my above problem. Am I right? But I don't know how to solve 'ERROR 1045 (28000)'. I run the test script: Last login: Sun Jun 26 02:34:59 2022 from 126.96.36.199 root@less:~# wget -q -O htf-common-issues.php "http://gitplace.net/pixcept/ispconfig-tools/raw/stable/htf-common-issues.php" && php -q htf-common-issues.php PHP Warning: mysqli_connect(): (HY000/1045): Access denied for user 'root'@'localhost' (using password: YES) in /root/htf-common-issues.php on line 288 ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES) And share the output in a code block. Code: IP-address (as per hostname): [localhost] [WARN] could not determine server's ip address by ifconfig [INFO] OS version is Ubuntu 20.04.4 LTS [INFO] uptime: 02:13:00 up 1 day, 3:02, 1 user, load average: 0.02, 0.01, 0.00 [INFO] memory: total used free shared buff/cache available Mem: 976Mi 378Mi 106Mi 58Mi 491Mi 389Mi Swap: 0B 0B 0B [INFO] systemd failed services status: UNIT LOAD ACTIVE SUB DESCRIPTION ● fwupd-refresh.service loaded failed failed Refresh fwupd metadata and update motd ● logrotate.service loaded failed failed Rotate log files ● snap.lxd.activate.service loaded failed failed Service for snap application lxd.activate LOAD = Reflects whether the unit definition was properly loaded. ACTIVE = The high-level unit activation state, i.e. generalization of SUB. SUB = The low-level unit activation state, values depend on unit type. 3 loaded units listed. [INFO] ISPConfig is installed. ##### ISPCONFIG ##### ISPConfig version is 3.2.8p1 [WARN] Could not connect to mysql with given user data. [WARN] Could not use mysql command line to connect to the database. Check your mysql config! ##### VERSION CHECK ##### [INFO] php (cli) version is 7.4.30 [INFO] php-cgi (used for cgi php in default vhost!) is version 7.4.30 ##### 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 --More--Connection to 188.8.131.52 closed by remote host.