If you already have a newer version of XAMPP and need 7.4 for a specific project, you have two primary options: Direct Download (Recommended) : Download the full installer for the 7.4.x series from the official XAMPP download archive on SourceForge Manual Swap Download the Thread Safe (TS) zip version of PHP 7.4 from PHP.net Windows downloads Rename your existing C:\xampp\php C:\xampp\php_backup Extract the PHP 7.4 zip contents into a new C:\xampp\php Update your httpd-xampp.conf file to point to the new PHP 7.4 files if the filenames differ. Common Fix for PHP 7.4 on XAMPP
PHP 8 introduced "TypeError" exceptions where PHP 7.4 only issued warnings. For a production-like local environment, sticking with 7.4 allows you to fix issues gradually without breaking the local build entirely. Xampp With Php 7.4 -