Technical Questions
Help articles related to Plesk migration, upgrades, databases ant etc.
Other
- How to start a command prompt as an Administrator on Windows Server
- How to diagnose a DoS/DDoS attack and find websites under attack on a Plesk server
- How to monitor usage of system resources in a period of time using atop?
- Anacron notifications are received after Plesk Obsidian update 34: cannot open directory: Permission denied
- CVE-2021-3156: vulnerability in Sudo before 1.9.5p2
- Unable to connect to the Plesk server via SFTP: Received unexpected end-of-file from SFTP server
Plesk Service/Interface
- The error occurs in an attempt to access Mail Accounts or WordPress Toolkit menus: Permission denied: the user does not have the manage permission
- "Registered domain name" suggests to enter www.domain.name when creating a new domain/subscription
- Unclear Fail2Ban warning in Plesk: Unable to find a corresponding IP address for Got: [Errno -5] No address associated with hostname
- Login to Plesk UI using domain name behind CloudFlare results into blank pages for Customers/Resellers/Domain users
- In Plesk, Websites & Domains > System Overview > More system info page shows error 404
- Not possible to enter the new activation code for Plesk: page is reloading constantly
Webserver
- Websites on PHP-FPM are unavailable or loading slowly: "server reached max_children setting" OR "pool seems busy"
- A website hosted in Plesk fails to load when ModSecurity is enabled: Access denied with code 403
- Enabling or updating Comodo rule set for ModSecurity on Plesk for Linux server fails: modsecurity_ctl failed: Failed to download comodo_free rule set
- A domain in Plesk intermittently shows error 403 or 404: incorrect Document Root is parsed by the webserver
- Brotli is not being used to compress content even if the Plesk version is already 18.0.33 and higer and Gzip is being used instead
- How to disable ModSecurity for a domain in Plesk?
Applications & Extensions
- How does the Plesk Firewall CLI tool update and restore configuration?
- Why is the G Suite extension no longer available Plesk Extension Catalog and Plesk Online Store?
- WordPress Toolkit on Plesk server shows blank page after 18.0.34.1 hotfix update
- Acronis Backup information are missing or no longer loaded after upgrade of Plesk to 18.0.34
- [BUG] Scheduled backups to Dropbox extension fail on Plesk server: too many requests
- Extensions Catalog produces a blank page when opening some pages after update to Plesk Obsidian 18.0.34
Backup, Restore & Migration
- How to remove Plesk backup files and their logs
- How to change the location for Plesk backup files on a Linux server
- Where are Plesk backup/restoration logs located?
- FTP backup functionality is not working after Plesk upgrade to Obsidian 18.0.33 version: Failed EPSV attempt. Disabling EPSV
- Unable to backup some databases via Plesk Backup Manager: database belongs to the other subscription
- Migration in Plesk failed: Configuration error: Invalid remote IP address '0.0.0.0'
Databases
- How to upgrade MySQL 5.5 to 5.6/5.7 or MariaDB 5.5 to 10.x on Linux?
- How to restore Plesk system databases from a Plesk daily/pre-upgrade dump
- Websites configured with PHP 7.2 or lower version fail to establish a database connection after updating MariaDB to v10.2.35 or v10.3.26: Malformed communication packet
- Unable to export database via phpMyAdmin in Plesk: Argument 5 passed to PhpMyAdmin\Export::getFilenameAndMimetype() must be of the type string, null given
- Diagnose & Repair tool detected issues with the database. How to fix them?
- Backup failed with the error in Plesk: 1049 Unknown database 'example'
Installation & Upgrade
- sa-compile update fails on Plesk server with Plesk Email Security: dpkg: error processing package sa-compile (--configure)
- How to change or get the server hostname on the Plesk server
- Plesk update to version 18.0.34 fails with message: Plesk database scheme was not upgraded completely
- SpamAssassin fails to update on a Plesk server: no 'mirrors.sought.rules.yerp.org' record found, channel failed
- Plesk Obsidian upgrade on Windows get's stuck or fails: this operation returned because the timeout period expired
- After November 30th, 2020, updating system packages on Plesk server with CentOS 6 fails: Cannot find a valid baseurl for repo: base
- How to create subfolder for public folder in Plesk Premium Email?
- Unable to send or receive emails in Postfix after updating to Plesk Obsidian 18.0.34 in Debian 9 OS: SASL authentication failure: no secret in database
- Mailbox size in Plesk UI differs from the actual size
- Custom mailbox's size is getting reset when mailbox's settings page is opened in Plesk
- Mail stuck in queue on Plesk server: delivery temporarily suspended: connect to 127.0.0.1[127.0.0.1]:10024: Connection refused
- [BUG] Incoming messages are duplicated on a few or all mailboxes on a Plesk server with Courier
DNS & Statistics
- Domains hosted on Plesk server cannot be accessed: DNSPROBE FINISHED ERROR
- Unable to update web-statistics in Plesk: Unable to parse pending domains traffic line
- How to add an MX DNS record with a custom priority for a Plesk domain?
- Mail is received: No valid IP addresses found for sub.example.com
- CVE-2020-8616, CVE-2020-8617: BIND vulnerabilities
- Unable to access the website with redirect: server IP address could not be found
Website Builder
- How to install Web Presence Builder 17.8.12 Standalone in Plesk for CentOS 8/Debian 10?
- Migration from WPB 12.0 to WPB 17.8.12
- How to enable Web Presence Builder for all websites?
- Presence Builder does not redirect to correct URL when the session in browser is expired: Unable to connect to Web Presence Builder server
- Web Presence Builder "Text & Images" module is displayed on all website pages instead of being displayed only on the page where the module had been added
- Error while accessing Web Presence Builder: Base table or view not found