Webserver

Apache/nginx incorrect behavior and everything else related to Web.

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?
Plesk error: AH00526: Syntax error on line 15 of /etc/apache2/plesk.conf.d/server.conf: Invalid command 'plesklog'
Many websites failed to open on the Plesk server: Error 502: Connection refused while connecting to upstream
How to restart an IIS Application Pool for a website on a Windows Plesk server?
How to calculate and adjust the MaxRequestWorkers limit on the server with Plesk
After updating Plesk Obsidian to 18.0.74 on Ubuntu 22.04, nginx fails to start: /lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.32' not found
[CVE-2025-66430] Security vulnerability in Password Protected Directories allows Plesk users to gain root-level access to a Plesk server
Apache cannot be started if SELinux is in enforcing mode: (13)Permission denied: AH00072: make_sock: could not bind to address 127.0.0.1:7080
Potential Nginx Configuration Issues After Updating to Plesk Obsidian 18.0.72 Update 2 on Specific Virtualized Setups
Website is showing ERR_TOO_MANY_REDIRECTS, 404 or Default Plesk Page after updating Plesk to 18.0.72 version
Websites hosted in Plesk are inaccessible and show HTTP 503 error
A lot of warnings appear in php-fpm log after updating Plesk: PHP Warning: Zend OPcache can't be temporary enabled
Websites hosted in Plesk are not accessible after an Apache update: 421 Misdirected Request
Unable to create a domain in Plesk or repair web server configuration: applicationHost.config Error: Cannot read configuration file
Errors appear when attempting to use Comodo ruleset in Plesk Web Application Firewall (ModSecurity)
Unable to start the Nginx Service on a Plesk Server: [emerg] unknown directive "brotli" in /etc/nginx/conf.d/brotli.conf:1
How to block user-agents in Plesk Control Panel on Windows?
How to block user-agents in Plesk Control Panel on Linux?
Unable to connect to MSSQL using web.config: Cannot open database “ASPState” requested by the login. The login failed.
The home page of Plesk shows an error: New configuration files for the Apache web server were not created due to the errors in configuration templates
How to update ImageMagick to version 7 in CentOS 7.9 in php 8.2?
'apache2 -t' shows error on a Plesk for Debian-based OS: DefaultRuntimeDir must be a valid directory, absolute or relative to ServerRoot
How to enable Step Debugger on PHP on a Plesk server?
On WordPress website hosted on Plesk for Linux server, pagination buttons in WordPress Admin dashboard do not work as expected
WordPress instance is marked as broken on CloudLinux OS: timeout: fork system call failed: Cannot allocate memory