Technical Questions
Help articles related to Plesk migration, upgrades, databases ant etc.
Plesk Service/Interface
- Unable to click the checkbox in the settings screen on Plesk: the Hand pointer cursor does not appear
- Plesk Repair tool fails to fix File System error: bytes-like object is required, not 'str'
- Feature “Website Log Check” on Plesk Obsidian 18.0.45 stops working after first log check and leads to subscriptions/domains menus showing blank page or error 500
- How to change default Plesk favicon?
- The database list in Plesk is displayed incorrectly when logged in as customer
- Additional user can view all subscriptions list owned by customer in Plesk
Other
- How to diagnose a DoS/DDoS attack and find websites under attack on a Plesk server
- How to add a custom PHP version in Plesk for Linux?
- How to monitor usage of system resources in a period of time using atop?
- How to get/reset lost Plesk Administrator password in Plesk for Linux
- Vulnerability PFSI-62465 in Plesk
- How to keep/store logs for years in Plesk for Windows?
Webserver
- A website or webmail hosted in Plesk periodically shows the Plesk/web server default page or old website content
- Websites on PHP-FPM are unavailable or loading slowly: "server reached max_children setting" OR "pool seems busy"
- Plesk website is slow and CPU and memory usage by Apache or PHP processes is high in Plesk
- PHP scripts fails with the following error: Unable to load dynamic library sodium.so : cannot open shared object file: No such file or directory
- Apache can not be started on a Plesk server: ModSecurity: Problems loading external resources
- After updating Plesk Obsidian to 18.0.43, the "plesk repair web" utility reports an error: There is a disabled required Apache module: php7.4
Applications & Extensions
- Unable to install certificate in Plesk: Passed 'exception' value must be an \Throwable object
- How to check the list of installed Node.js versions on a Plesk server?
- Unable to activate Node.js for a subdomain in Plesk: Another Node.js application in the subscription already uses this application root
- Unable to install WordPress: Unable to download the WordPress package from wordpress.org
- Log Browser extension stuck in loading state: 110: Connection timed out
- WordPress Toolkit provides an error: Could not fetch the list of WordPress installations: Can not find domain by id 123
Backup, Restore & Migration
- Backups fail after the update to Plesk Obsidian 18.0.47: The backup process failed: can't concat str to bytes
- Migration from Plesk servers with MySQL<5.5 fails: Character set 'utf8mb4' is not a compiled character set
- Migration to another Plesk server fails: Unable to restore DNS zone from a backup: Incorrect DNS record values were specified: example.com. IN <Record Type> *.example.com.: ('ttl' = '0')
- Unable to restore Plesk backup on a different server: The archive is not valid Plesk backup or has been created in an unsupported Plesk version
- Backup process can be stuck since Plesk update to 18.0.41 spawning a lot of backupmng processes
- Unable to schedule domain's backups in Plesk: Certificate has expired
Databases
- How to upgrade MySQL 5.5 to 5.6/5.7 or MariaDB 5.5 to 10.x on Linux?
- How to fix InnoDB corruption cases for the MySQL databases on Plesk for Linux?
- Unable to start MariaDB 10.6 on a Plesk server: Bind on TCP/IP port. Got error: 22: Invalid argument
- Plesk and system update fails: http://yum.mariadb.org/10.1/centos7-amd64/repodata/repomd.xml: [Errno 14] HTTP Error 404 - Not Found
- Plesk database servers menu shows warning: Unable to determine the TCP port number used by Microsoft SQL server 'localhost'
- MySQL package fails to update on Plesk server: The GPG keys listed for the "MySQL 5.7 Community Server" repository are already installed but they are not correct for this package.
Installation & Upgrade
- How to perform dist-upgrade procedure on Linux server with Plesk?
- Unable to update Plesk from 18.0.45 to 18.0.46: Exception: Failed to solve dependencies: plesk-awstats-configurator-18.0-2.centos.7+p18.0.46.0+t220808.0959.noarch requires awstats >= 7.8
- Warnings during system updates on a Plesk server with Ubuntu 22.04: Key is stored in legacy trusted.gpg keyring
- Plesk Update Manager fails to install system updates: Failed to solve dependencies: plesk-php74-sodium-7.4.30 requires libsodium.so.23()(64bit)
- Unable to update Plesk: EPEL repository should be enabled for PHP X.Y
- An email received from Plesk: pum is called with arguments: ['--list', '--repo-info', '--json']
- Unable to start Postfix in Plesk: /usr/sbin/postconf: libmysqlclient.so.18: cannot open shared object file: No such file or directory
- Swiftmailer/Symfonymailer or Prestashop messages stopped working after upgrading Plesk to version 18.0.45
- CVE-2022-30287: Vulnerability in Horde
- Does Plesk Email Security extension support Rocky Linux 8/RHEL 8?
- How to whitelist a domain in Plesk Email Security extension?
- Administrator receives bounce email message to mailbox not registered in Plesk: This address no longer accepts mail
DNS & Statistics
- Unable to start named/bind DNS in Plesk: unknown option 'version'
- Domain is not accessible from some locations after switching to Plesk nameservers due to DNSSEC misconfiguration
- Transfer DNS button is missing in Plesk
- Is it possible to manage DNSSEC via command-line interface in Plesk?
- Web Statistics page in Plesk shows 403 Forbidden error: Symbolic link not allowed or link target not accessible
- Unable to start BIND on Plesk server: Failed with result 'timeout'
Website Builder
- Unable to publish website in Web Presence Builder: Unable to Connect to ssl://feedback.pp.parallels.com:443: Name or service not known
- Migration from WPB 12.0 to WPB 17.8.12
- How to enable Web Presence Builder for all websites?
- Error while accessing Plesk Web Presence Builder: Base table or view not found
- Unable to backup/restore a snapshot for Web Presence Builder in Plesk for Windows: Invalid Snapshot
- How to back up and restore a snapshot of the Web Presence Builder site through GUI?