My right Alt key opens browser. Help!

[szopija]

Hi,
My "alt gr" known as right Alt key opens bing browser search in mozilla for "How to receive help in windows 10".

Is there a way to find this shortcut (I mean a file path or smth)? Tried searching in google, but nothing appears.

Thanks for your time c:

 

[Silmefaron]

Locate the icon for Mozilla on your desktop, right click it and select properties. See if it has a short-cut key combination attached to it, or, if you have a desktop shortcut for this specific webpage, a key combination attached to it. Do you have any key-mapping software installed on your PC?