Technical Questions
Help articles related to Plesk migration, upgrades, databases ant etc.
Plesk Service/Interface
- Unable to list client's databases in Plesk: TypeError: Cannot read properties of undefined (reading 'searchFilters')
- Plesk website previews are not loading and show a broken image (April 14th, 2025)
- Can not issue Let's Encrypt certificates for plesk.page domains: the domain's nameservers may be malfunctioning
- Plesk interface shows: cURL error (77): Error in cURL request: Problem with the SSL CA cert (path? access rights?
- Unable to access Plesk: The amount of resources you operate with has exceeded the limits defined by your current product license
- On Plesk server with CloudLinux, creating domain or changing domain's hosting type fails: Error: hosting update is failed
Other
- How to secure a Plesk server
- How to diagnose a DoS/DDoS attack and find websites under attack on a Plesk server
- It is possible to find out historical information for the CPU for a subscription?
- Which antivirus is compatible with Ubuntu 22 using ARM 64 bits?
- Wordpress error uploading PDF: ImagickException: Unable to read image blob; PHP message: Upload failed: String binary is zero after processing image
- How to check the result of a scheduled task in Plesk Windows?
Webserver
- nginx fails to start/reload on a Plesk server: Too many open files
- What DDoS protection tools are available 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)
- 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
- Docker outbound traffic gets blocked after 18.0.67 Update #3
Backup, Restore & Migration
- How to sync a subscription between source and destination servers after Plesk migration
- 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
- How to back up / restore a system database in Plesk
- Plesk is not accessible: ERROR: Zend_Db_Adapter_Exception: SQLSTATE[HY000] [2002] No such file or directory
- 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
Installation & Upgrade
- How to update Plesk Obsidian to the latest build?
- Error when installing Plesk on Windows Server 2025: Unable to install the "panel-18.0.69.noarch" package.
- Plesk installation or upgrade fails: Fatal error during packages installation: Public key is not installed
- CentOS 7 to AlmaLinux conversion fails in Plesk: Detected unknown GPG keys for target system repositories: http://autoinstall.plesk.com/plesk.gpg
- Unable to install Plesk with the Mariadb 11.4 repository.
- Unable to update Plesk on Ubuntu 22: Failed to download the file http://autoinstall.plesk.com/pool/PHP_7.1.33_11/php71-ubt22.04-x86_64.inf3
- 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
- Delays in mail syncronization for mailboxes hosted on a Plesk server
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?