How to Fix Middle Mouse Button not working
The missing or outdated mouse driver can lead to the middle mouse button not working issue, so you should update your mouse driver to the latest version to fix the issue. You can manually download the latest version of your mouse driver file from the manufacturer, and install it in your computer.
In order to test the middle button of your mice, navigate your cursor inside the mouse model on this page and hit the center button. If the model mouse’s scroller light up, then your mice’s middle button is working fine.