Technical Questions
Help articles related to Plesk migration, upgrades, databases ant etc.
Other
- PFSI-61276 security fix
- After March 20, 2019, installation of system updates on Plesk servers with Debian 8 fails: Failed to fetch http://ftp.debian.org/debian/dists/jessie-updates: 404 Not Found
- How to subscribe on changes in Plesk Help Center articles / sections
- TTFB for site in Plesk is too high. What can be done to improve it?
- Plesk admin hourly receives success emails from KAV update
- Website preview URL is automatically redirected to the main website URL
Plesk Service/Interface
- The number of subscriptions listed in Service plan screen is different from the actual one
- Unable to set default IP address during the initial Plesk configuration on Windows
- The "Restrict Administrative Access" feature does not work.
- Plesk daily maintenance task consume all the RAM on the server
- Not possible to change Customer password via CLI, if name contains international symbols
- WordPress login via site preview does not work with Plesk from cloud image
Webserver
- Unable to start Apache or/and nginx: SSLCertificateFile: file does not exist or is empty
- Websites on PHP-FPM are unavailable or loading slowly: "server reached max_children setting" OR "pool seems busy"
- How to secure a Plesk interface with an SSL certificate (Let's Encrypt / other certificate authorities)
- Apache restart shows: AH00543: httpd: bad user name if immutable bit is used
- CVE-2019-0211: Apache HTTP Server privilege escalation from modules' scripts
- When Dedicates IIS Pool is switched off and then back on, Maximum CPU Usage (%) becomes Unlimited
Applications & Extensions
- Let's Encrypt challenge files are not removed from .well-known/acme-challenge/ directories
- "apt update" is not working on Plesk server with Ubuntu or Debian after installing PageSpeed Apache module through Google PageSpeed Insights extension: The repository 'http://dl.google.com/linux/mod-pagespeed/deb stable Release' is not signed
- Unable to order a DigiCert SSL: Missing or Invalid Field: PartnerOrderID
- Cannot select domain to clone WP instance: Something went wrong n is undefined
- Subdomain zones are not synced with Amazon via Amazon Rout 53 extension
- Unable to install WordPress: The directory cannot be used because it would overlap another app installed at example.com
Backup, Restore & Migration
- How to restore Plesk installation on a new Windows server after disaster
- Backup restore fails: Unable to decrypt data: Data error (cyclic redundancy check)
- Helm 3 compatibility checker does not work
- Unable to set up a remote FTP storage for Plesk backups when the remote storage is using IPv6 only: Using the local Plesk's FTP server as a remote storage is prohibited
- Unable to open backup : Error: [Errno 2] No such file or directory: /path/to/backup_info_1903282032.xml
- Unable to migrate an IDN domain with Web Presence Builder
Databases
- Error when running a query inside PHPMyAdmin in Plesk for Windows Server: unrecognized statement type (near lock)
- Unable to rename table in phpMyAdmin under Domain: Cannot read property 'substring' of undefined
- Websites show garbled characters after Plesk update
- Multiple Vulnerabilities in Oracle MySQL Server before 5.7.25, 5.6.43, 5.5.63: potential Unauthorized access
- Unable to connect to Plesk server via FTP to any account
- 'undefined' is shown next to Database name when installing WordPress on subdomain
Installation & Upgrade
- How to install/remove additional PHP versions provided by Plesk
- PrivateTemp folder on a Plesk for Windows server is reset to default upon the upgrade
- Automatic Plesk upgrade to the latest stable version
- Unable to update Plesk: E: Version '17.8.11-debian9.0.build1708190XXX.XX' for '<plesk_package_name>' was not found
- Cannot update plesk when DUMP_D is pointed to NFS4 share
- Cannot update Plesk with KernelCare extension installed: /lib/modules/3.14.32-xxxx-std-ipv6-64: No such file or directory
- Mail address created in Plesk via API request with "No mailbox" status despite failed API response
- DKIM verification fails in sending from Office365: signature verification failed
- Unable to import mail messages if default location of mailboxes was changed
- Roundcube does not save contacts with PHP 7.3
- Customized Dovecot configuration file /etc/dovecot/dovecot.conf is overwritten after Plesk updates
- Mail is not forwarded to destination address if forwarding source mail address has reached mailbox size limit and its mailbox was turned off subsequently
DNS & Statistics
- Statistics calculation does not work in Plesk on Windows: Concurrency syncronization error
- Why is it not possible to install DNSSEC extension for CentOS 6?
- Unable to authorize DigitalOcean DNS extension: client authentication failed due to unknown client
- Awstats stopped to calculate statistics
- Removed NS records are not restored on enabling the DNS zone
- IP address for SPF record is not changed when IP of subscription is changed.
Website Builder
- Message in Web Presence Builder contact form is disappeared if captcha enabled
- Cannot edit image in the text body in Web Presence Builder
- Web Presence Builder site does not work if document root is specified in Cyrillic
- How to create basic website design with Plesk
- Unable to publish WPB site to Facebook: Facebook has detected that Parallels Presence Builder isn't using a secure connection to transfer information
- Presence Builder icon is shown for domain while Presence Builder is disabled in Service Plan