If you installed a version of WAMPServer with Apache 2.4.2 then you installed a 64 bit version i.e. Apache / PHP / MySQL are all 64 bit versions.
Unfortunately all the ADDONS are still 32 bit versions, so you will get all sorts of errors when trying to switch between Apache's and PHP's.
Try installing the WAMPServer 2.4 32bit version and then install the required addons. You may still get the odd hiccup switching as both Apache and PHP communities have been chnaging the compiler versions that they use and that builds in its own issues.
For reference I run Joomla 3.x on Apache 2.2.22 and PHP 5.3 so that (WAMP 32 and PHP 5.3 2.2E) may well be your best bet.
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(Windows 10 Pro 64bit) (Wampserver 3.3.4 64bit) Aestan Tray Menu 3.2.5.4
<Apache versions MULTIPE> <PHP versions MULTIPLE> <MySQL Versions MULTIPLE>
<MariaDB versions MULTIPLE> <phpMyAdmin versions MULTIPLE> <MySQL Workbench 8.0.23>Read The Manuals Apache --
MySQL --
PHP --
phpMyAdminGet your Apache/MySQL/mariaDB/PHP ADDONs here from the
WAMPServer alternate Repo-X-X-X-
Backup your databases regularly Here is How dont regret it later! Yes even when developing -X-X-X-