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Plesk
Technical Questions
Technical Questions
Help articles related to Plesk migration, upgrades, databases ant etc.
Plesk Service/Interface
What does Imunify notifications do in Plesk?
PHP settings do not apply on a domain when CageFS is enabled in CloudLinux
[CVE-2025-66431] Security vulnerability in domain creation mechanism allows Plesk users to execute arbitrary code on behalf of root
Generating CSR certificate under AlmaLinux 9 and AlmaLinux 10 does not save the Country, City and other fields from SSL certificate settings section
Plesk update fails: bind9 package is half-configured
Wrong $_SERVER['HTTP_HOST'] and $_SERVER['SERVER_NAME'] using Default Site in IP Addresses
See all 695 articles
Other
How to monitor usage of system resources in a period of time using atop
How to diagnose a DoS/DDoS attack and find websites under attack on a Plesk server
Vulnerability CVE-2026-9256
Why does an SSL certificate expire before the subscription period ends?
Vulnerability CVE-2026-43284: Dirty Frag
Vulnerability CVE-2026-31431: Copy Fail
See all 487 articles
Webserver
Websites on PHP-FPM are unavailable or loading slowly: server reached max_children setting (*), consider raising it
Apache keeps going down on a Plesk server: server reached MaxRequestWorkers setting
Vulnerability: CVE-2026-42945: DoS and RCE in nginx before 1.31.1/1.30.1
Is Plesk affected by CVE-2026-23918? (Double Free and possible RCE in Apache http2 module)
Preferred domain redirect does not work when Nginx is not installed in Plesk
What do the HTTP status codes that you see in Plesk server logs mean in general?
See all 524 articles
Applications & Extensions
How to manage Plesk extensions (install, disable, remove, update)
What DDoS protection tools are available in Plesk
What to do if a WordPress website is hacked or infected?
Grafana Alerts and Thresholds are not available
How to hide the SecurityRisk score label in Wordpress Toolkit for Plesk?
Imunify360 packages fail to update in Plesk: Failed to fetch (404 Not Found)
See all 688 articles
Backup, Restore & Migration
Plesk backup task finishes with the warning: Could not back up all data from the directory '/var/qmail/mailnames/example.com'
Best Practices for Plesk and Server Backups
Plesk backups to cloud storage fails: Unable to create the remote backup: assign: Bad file descriptor
Cannot restore Plesk backup on Almalinux 10: Fatal error: plesk::mail::postfix::PostfixConfigurationError(postmap: fatal: lmdb:/var/spool/postfix/plesk/virtual
Unable access active migration session in Plesk: version_compare(): Argument #1 ($version1) must be of type string, array given.
Acronis Backup: Failed to install the backup agent. For details, see /var/log/trueimage-setup.log
See all 382 articles
Databases
How to troubleshoot slow performance of MySQL/MariaDB on a Plesk server?
Vulnerability in Plesk’s MS SQL database user password update mechanism
MSSQL 'sa' user locked out: Login failed for user 'sa'
Can't install MariaDB in Plesk Windows: FATAL ERROR: Can't create data directory 'N:\MySQL-Data' (one or more intermediate directories do not exist)
Unable to log in to Plesk: Table 'psa.smb_componentUpdates' doesn't exist in engine
Cannot see remote MySQL/MariaDB database in Plesk Customer Panel
See all 258 articles
Installation & Upgrade
How to update Plesk Obsidian to the latest build
MariaDB upgrade via Plesk interface fails: curl: (28) Operation timed out after 15000 milliseconds with 0 bytes received
Plesk Update fails with errors: Integrity constraint violation: 1062 Duplicate entry db_name db\_name' for key 'PRIMARY'
Package update fails on a Plesk server: ERROR: Transaction test error: Index.xml from install of mysql-common conflicts with file from package MariaDB-common
Unable to install Microsoft Web Deploy on Windows 2025 with Plesk: Feature name MicrosoftWindowsPowerShellV2 is unknown
The "plesk repair" utilities show warnings on Debian-based systems: Cannot find deb-archive for package
See all 269 articles
Mail
How to exclude a domain from DMARC check in Plesk for Linux
SpamAssassin rules can't be updated on CentOS 7 server with Plesk: config: SpamAssassin failed to parse line, is not valid for "util_rb_3tld"
Is Roundcube 1.4 secured against CVE-2026-25916 and CVE-2026-26079 in Plesk?
Integrating SmarterMail 100.0.9560 with Plesk fails: Login failure: Missing auth
Dovecot IMAP crashes on a Plesk server with Ubuntu 24.04: Panic: file imap-sieve-storage.c: line 216 (imap_sieve_add_mailbox_event): assertion failed
Unable to start Amavis: ERROR: MISSING REQUIRED ADDITIONAL MODULES: DBD::MariaDB
See all 550 articles
DNS & Statistics
Why was AWStats deprecated, what tool replaces it, and what happens to existing servers and domains that still use AWStats?
AWStats traffic significantly differs from Plesk traffic stats in a domain
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?
See all 138 articles
Website Builder
Plesk Sitejet domain fail to publish with permissions error for .well-known directory: filemng: Error occurred during /bin/rm command.
Sitejet Builder can not be opened for a Plesk domain: Error: Could not connect to Website Builder API
Error opening Site Builder: pm_Exception: You don't have permission to perform this action
Plesk 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
See all 24 articles
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