[Solved] Apache 2.4.62 - AH00534: httpd: Configuration error: More than one MPM loaded.
If you are building Apache/httpd from source (in my case it is httpd 2.4.62) and you encounter this error: AH00534: httpd: Configuration error: More than one MPM loaded. But you are absolutely sure that in your config file you just enable 1 module, here is what you need to check: In my case, my command of building Apache from source is this: ./configure --prefix=/usr/local/httpd-2.4.62 \ --enable-proxy \ --enable-proxy-http \ --enable-proxy-ajp \ --enable-forward \ --enable-module=most \ --enable-mods-shared=all \ --enable-so \ --enable-include \ --enable-headers \ --enable-deflate \ --enable-cache \ --enable-disk-cache \ --enable-mem-cache \ --enable-rewrite \ --enable-static-support \ --enable-expires \ --with-apr-util=/usr/local/apr \ --with-apr=/usr/local/apr Important: If you run httpd -M, you will see that mpm-event is "static", which means it is compiled as "static" module, i.e. pre-build and loaded by default. But if you add: --enable-mpms-shared \ --with-m...