Plesk Service/Interface

This section contains articles about failed Plesk interface actions and broken Plesk service.

Plesk shows the error: Trait 'PleskExt\<ext_name>\path\to\file.php' not found (CustomButtons.php:11)
How to set up/change a public IP address in Plesk when the server is behind a router with NAT
Unable to log in to Plesk: SWKeyExFatalError Repository is not opened
A domain shows the Plesk default page when it is disabled
Cannot install application on CloudLinux despite required PHP version in PHP Selector: The app requires PHP 5.6 or later. Your PHP is 5.4.16.
How to enable OCSP Stapling and HSTS for Plesk interface?
Unable to rename domain in Plesk: No backend DB entries were modified
Images from WordPress website hosted on Plesk server are not available on third-party resource: Stop! This image was hotlinked
How to issue a SSL/TLS certificate for a domain via REST API?
Is it possible to manage swap using Plesk?
How to disable scheduled backup tasks over the CLI?
Plesk shows the error: PleskPermissionDeniedException: Session token has expired.
How to change the mailbox limit for a subscription in Plesk?
Some elements Plesk interface/websites hosted on Plesk are not loaded when Cloudflare's Rocket Loader is used
Options missing in Tools & Settings after upgrading to Plesk Obsidian
Cannot remove IP address from Plesk server: The IP address 203.0.113.2 is already used for hosting
How to disable Permanent SEO-safe 301 redirect from HTTP to HTTPS by default?
Various operations freeze and get stuck in Plesk: Request to ws-server failed
Cannot create domain: .Binding.AddSslCertificate(Byte[] certificateHash, String certificateStoreName)
Can't secure Plesk with Let's Encrypt: Invalid port in redirect target. Only ports 80 and 443 are supported, not 8443
Unable to create a folder archive: Unable to create the archive: Access is denied
Unable to access Plesk GUI after upgrade from Onyx to Obsidian: HTTP 500.19 - Internal Server Error
[BUG] PCI compliance scan shows a warning: CVE-2000-0649
Unable to manage permissions in Plesk File Manager: Error: Access is denied. (Error code 5) at GetTempFileName in C:\Windows\TEMP
Message appears in the Event Viewer once an hour on a Plesk for Windows server: The status for service pleskstartup (PleskStartup) remains Stopped
Unable to repair broken IP in Plesk on Windows Server: Invalid mask parameter
Cannot issue certificate for a domain used as Custom URL for logging into Plesk: The authorization token is not available
The "Change view" button is not shown in Plesk on Web Pro or Web Host Editions
Unable to start Fail2ban: found no accessible config files
After manually removing the ModSecurity, Plesk and websites return error 503: The Module DLL C:\Windows\System32\inetsrv\ModSecurityIIS.dll failed to load