Technical Questions
Help articles related to Plesk migration, upgrades, databases ant etc.
Plesk Service/Interface
- MySQL fails to start when a Plesk server lacks disk space: SQLSTATE[HY000] No space left on device 500 Plesk\Exception\Database
- What is Plesk Screenshot Service?
- Sites link in Plesk's IP addresses menu can not be opened: Invalid URL was requested
- The following warnings are sent via Plesk cron task: PHP Warning: unlink(/.../watchdog/report/security_2022-02-07): No such file or directory
- Plesk repair installation error: Warning: phpMyAdmin was configured without configuration storage in database
- Unable to access Plesk panel after upgrade: ERROR: Array and string offset access syntax with curly braces is no longer supported (lessc.inc.php:717)
Other
- How to monitor the usage of system resources in a period of time using atop
- How to secure a Plesk server
- "Your Trial Feedback" notification is shown on a server with non-trial license
- Vulnerability CVE-2023-24044
- Do I need Microsoft RDS licenses for system users created by Plesk?
- Comodo ModSecurity ruleset is not updated in Plesk: Failed to download the Comodo rule set
Webserver
- How to disable specific ModSecurity rules in Plesk
- Apache fails to start on a Plesk server after Apache update on CentOS 7 / RHEL 7
- How to enable the use GET, HEAD, POST, PUT, DELETE, PATCH requests on a Plesk for Windows Server
- Plesk Update fails on CentOS: Failed to solve dependencies: php-process-5.4.16
- AWStats is not calculated on a Plesk server with CentOS 7 and enabled SELinux
- What are .php-ini and .php-version files at the domain directory on Plesk server?
Applications & Extensions
- How to install Let's Encrypt SSL certificate for domain in Plesk?
- Unable to log in to the WP Admin dashboard by using WP Toolkit: JSON: Illegal Token
- Unable to update plugins in WordPress: The plugin has not been updated due to unrecognized reason
- Cannot re-install Docker extension in Plesk: dpkg: error processing package docker-ce (--configure)
- Let's Encrypt certificate issue for domains or Plesk Panel: Failed to read x509 certificate from file or string use methods
- Error in Apache logs: "ModSecurity: JSON support was not enabled"
Backup, Restore & Migration
- Migration fails with error on Plesk Obsidian 18.0.50: "Unsupported operand types: string & int","file":"AbstractCu.php"
- Backup via Plesk Google Drive fails: your computer or network may be sending automated queries
- Unable to migrate a subscription: Failed to perform action: Restart IIS for IDN domains
- Backup can not be created in Plesk: "Document is empty, line 1, column 1 (, line 1)" or "None (line 0)"
- Unable to create a backup in Plesk: Failed to exec backup_restore_helper: Exit code: 3: System user unavailable
- Plesk backup finishes with warning message: lscache/.cm.log: Permission denied
Databases
- How to manage a database hosted in Plesk using a local database client?
- Plesk Update fails: NOKEY Importing GPG key 0xC74CD1D8
- Database Servers page redirects to Plesk main page: Dependent row(s) isn't found
- Are there any alternatives to myLittleAdmin in Plesk for Windows?
- Unable to create domain: A specified logon session does not exist. It may already have been terminated. (Exception from HRESULT: 0x80070520)
- MariaDB cannot start on Plesk server: redo log file exists
Installation & Upgrade
- How to update Plesk Obsidian to the latest build
- How to perform dist-upgrade procedure on Linux server with Plesk?
- How to upgrade Plesk to the next release
- Which ports should be opened in the firewall on a Plesk server
- Plesk update fails after converting the server from Centos 8 to AlmaLinux 8: Failed to download metadata for repo 'PLESK_18_0_41-extras'
- Plesk update completes with warning: Some problems occurred with the System Updates tool on your server
- Best practices for sending outgoing mail from a Plesk server
- MailEnable webmail is not accessible: Could not load type 'MailEnable.Clients.WebMail._default1'
- How to troubleshoot autodiscover functionality in a Plesk server?
- Why is Roundcube 1.5.0/1.6.0 not available in Plesk for CentOS 7 and Ubuntu 18.04?
- Outlook cannot connect via TLS to a Plesk server after Windows update (KB5018410)
- Unable to start Postfix in Plesk: /usr/sbin/postconf: libmysqlclient.so.18: cannot open shared object file: No such file or directory
DNS & Statistics
- Plesk messages to Gmail get bounced with error: fails to pass SPF checks with the ip
- A warning exists for the Plesk-hosted domain in online checkers: SOA Expire Value out of recommended range
- 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?
Website Builder
- How to configure cookie conscent in Web Presence Builder for Plesk?
- Presence builder shows the error in Plesk Obsidian 18.0.50: Unable to connect to Web Presence Builder server. Please contact the server administrator.
- How to disable Google Fonts on a website hosted with Web Presence 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 in Plesk for all websites?