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Applications & Extensions

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Plesk applications and extensions installation/management articles. WordPress, Joomla, Let's Encrypt, CloudFlare and etc.

  • Unable to install WordPress using Plesk WordPress Toolkit on CloudLinux due to low system user resources
  • Unable to issue a Let's Encrypt certificate for domain with forwarding hosting type when nginx is not installed and/or disabled on the Plesk server
  • Unable to clone instance or apply SmartUpdates on Wordpress Toolkit in Plesk: Smart Update was unable to correctly clone your website for further analysis
  • Unable to update Wordpress: WordPress version requires PHP version 5.6.20 or newer
  • Unable to create backup via Acronis Backup extension in Plesk: The pre-data capture command completed with non-zero return code: 1
  • How to manage the list of the available certificate vendors?
  • Server with Plesk Email Security no longer sends/receives emails: [127.0.0.1]:10024: Connection refused
  • Is it possible to disable wp-cron scheduled task created by WordPress Toolkit?
  • Unable to open Composer extension for a Plesk domain: Could not open input file: /usr/local/psa/var/modules/composer//composer.phar
  • Email with text "Watchdog was stopped" is received weekly from Plesk server
  • ClamAV Antivirus error in Plesk: Failed to start clamd@scan.service: Unit not found.
  • Unable to issue a Let's Encrypt certificate in Plesk: The authorization token is not available
  • Let's Encrypt notifications are received for an already renewed certificate
  • SSL/TLS certificate for mail is not automatically updated by Let's Encrypt in Plesk
  • Unable to issue a Let's Encrypt certificate: an ASP.NET setting has been detected that does not apply in Integrated managed pipeline mode
  • Watchdog security scan fails in Plesk: Non-existent pathname: /usr/bin/lwp-request
  • WordPress instance can not be removed via Plesk applications catalog
  • All websites on Plesk server periodically unavailable after accessing WordPress comments or working in WordPress dashboard
  • Unable to start ClamAV in Plesk: Cannot allocate memory
  • Unable to add a keyword in SEO Toolkit: Keyword limit reached
  • Can't install plugin via Wordpress Toolkit: destination folder already exists
  • Unable to install the Plesk Email Security: ERROR: Missing required additional modules: DBD::mysql
  • Unable to issue Let’s Encrypt certificate for domain in Plesk: misconfiguration of the Common Challenge Directory
  • Unable to issue Let's Encrypt certificate when Let's Encrypt extension is in standalone mode
  • How Let's Encrypt extension renews certificates?
  • Plesk Advanced Monitoring shows an error: login.OAuthLogin(missing saved state)
  • Unable to configure Plesk Email Security: Conflicting extension installed: SpamExperts Email Security. Please uninstall it first to continue with the installation
  • Plesk mail notification is received: Could not secure domains - Missed domain names failed to pass validation: www.example.com
  • ModSecurity blocks access to the website: Failed to access DBM file
  • The SpamAssassin service is always stopped when the Plesk Email Security extension is installed
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