Most of the time, we casually install various PHP versions and server tools without checking if they were built for Win32 or Win64. A discussion for another day. I recently downgraded Laragon’s from PHP8.1-x64 to PHP7.x-x86. This had a little consequence - APACHE! Hence, I got the error below, indicating that my PHP and Apache can’t work together because they are of different architectures or builds. The originally installed Apache was for 64-bit PHP versions, there are no Apache versions designed to run both 32-bit and 64-bit builds of PHP. In this article, I share steps and links that guide you to install multiple versions and builds of Apache on Laragon. 1. For all intent and purposes, you are advised to always download the latest version of Apache. Visit this URL https://www.apachelounge.com/download/additional/ to see the different versions available. It is easy to access the 64-bit versions from the homepage. However, to access the 32-bit versions, you need to use this URL. 2