Technical Questions
Help articles related to Plesk migration, upgrades, databases ant etc.
Plesk Service/Interface
- Random error in Plesk interface: Serialization failure: 1213 Deadlock found when trying to get lock
- Plesk Repair shows false warnings: Cannot find deb-archive for package
- Is it possible to customize the URL link in Domains > example.com > Mail > Mail accounts > Mail client setup?
- How to disable the Setup Wizard Link on Plesk interface?
- The sw-engine process causes high CPU usage on a Plesk server
- Menu "Extensions" in Plesk and/or extensions' menus fail to open: ERROR: Declaration of DI\CompiledContainer::get($name) must be compatible with DI\Container::get(string $id): mixed (CompiledContainer.php:41)
Other
- How to monitor usage of system resources in a period of time using atop
- How to diagnose a DoS/DDoS attack and find websites under attack on a Plesk server
- Is there a way to anonymize IP addresses in logfiles before log rotate?
- An SSL Certificate cannot be issued: Could not issue a Let's Encrypt SSL/TLS certificate for example.com
- Is Ubuntu 18.04 supported by Plesk?
- It is possible to find out historical information for the CPU for a subscription?
Webserver
- Websites on PHP-FPM are unavailable or loading slowly: server reached max_children setting (*), consider raising it
- How to disable specific Web Application Firewall ModSecurity rules in Plesk
- How to block user-agents in Plesk Control Panel on Windows?
- How to block user-agents in Plesk Control Panel on Linux?
- Unable to connect to MSSQL using web.config: Cannot open database “ASPState” requested by the login. The login failed.
- How to update ImageMagick to version 7 in CentOS 7.9 in php 8.2?
Applications & Extensions
- How to manage Plesk extensions (install, disable, remove, update)
- Which Node.js versions are available for installation in Plesk for Windows?
- PHP-FPM (FastCGI Process Manager) is reported as down after Plesk update
- Let’s Encrypt certificate issuance fails in Plesk for Kazakhstan-based hosts: Could not obtain directory: cURL error 52: Empty reply from server
- S3 backup fails: Unsupported header 'x-amz-checksum-crc32' received for this API call.
- Plesk Nextcloud extension deactivates users by constantly failing to log in
Backup, Restore & Migration
- Unable to back up APS controller data. Error: resource of type aps.database with id not found by brokers
- How to force an incremental backup to run if previously incremental backup failed?
- Backup & Restore tool displays only one backup
- Error exporting database dump: Codec Load Error: C:\Program Files (x86)\Plesk\admin\bin64\7z.dlI: Access is denied.
- License server key shows invalid in VPS migrated to openstack cloud
- Unable to start migration in Plesk: root@203.0.113.2: Permission denied (publickey,gssapi-keyex,gssapi-with-mic, password).
Databases
- How to upgrade MySQL 5.5 to 5.6/5.7 or MariaDB 5.5 to 10.x on Linux
- Cannot see remote MySQL/MariaDB database in Plesk Customer Panel
- MariaDB upgrade option is missing under Tools & Settings > Database Servers
- On a Plesk server with WP Toolkit, an unwanted prefix is added to the name of a cloned database
- Cannot use database upgrade tool or Performance Booster for MariaDB 11.4
- Can not connect to the database server: can't connect to mysql server on example.com (10061)
Installation & Upgrade
- How to perform dist-upgrade procedure on Linux server with Plesk?
- How to update Plesk Obsidian to the latest build?
- What applications from the APS catalog are being deprecated in Plesk Obsidian 18.0.71?
- Problem updating Plesk using Ubuntu Landscape
- Error when installing Plesk on Windows Server 2025: Unable to install the "panel-18.0.69.noarch" package.
- CentOS 7 to Almalinux 8 upgrade fails at: Enter username for Imunify360: alt-php at repo.alt.cloudlinux.com:
- How to enable 2 step authenticantion (2FA) in SOGo webmail?
- How to list all mailboxes, their size, mail quota and mailbox occupation?
- How to display hidden folders in roundcube webmail?
- Unable to receive email with Plesk Email Security extension installed: (!)connect_to_sql: unable to connect to DSN 'DBI:mysql:database=emailsecurity;mysql_socket=/var/run/mysqld/mysqld.sock'
- Can't receive email on mailbox: Local Delivery: Failure - Domain for ([SMTP:test@example.com]) is locally serviced, but recipient is not defined in address map.
- SpamAssassin ignores mailboxes specfic configration when mailbox contains an ampersand
DNS & Statistics
- How to enable the local DNS zone for a Plesk domain?
- DNS bind service fails on a Plesk server after recent bind package update: loading from master file /var/named/chroot/var/0.13.203.in-addr.arpa.next failed: too many records
- How to track which file is being most downloaded on a website on a Plesk server?
- Why is it not possible to add a DS record to a root domain in Plesk?
- Unable to start BIND DNS server service on a server with Plesk for Debian/Ubuntu: option 'dnssec-enable' no longer exists
- How to disable the automatic "notify-to-soa yes" in named.conf for domains in a Plesk server?
Website Builder
- Error opening Site Builder: pm_Exception: You don't have permission to perform this action
- Sitejet Builder editing error: Can not access Sitejet Website Builder for this domain after migration.
- Unable to publish website created in Web Presence Builder: APIv1 is deprecated. Please, switch to the new APIv3
- Unable to find Web Presence Builder in Plesk Installer
- Does the Sitejet Builder replace the Web Presence Builder in Plesk?
- How can I move a website built with Sitejet to a new domain while maintaining the ability to update it with Sitejet?