So, I've had this problem since last 3 months. I'm using Firefox with auto-update turned on. Right now my version is 110.0. Every now and then Firefox stops to load any websites and after closing it and opening it again it won't open correctly saying that my profile was created using newer version of Firefox and I need to create new one. At some point I was on default-release-9 until I asked about it on Reddit and got a reply guiding me to check compatibility.ini in my profile directory and fair enough, when this happens, compatibility.ini indicates Firefox version 119 so Firefox is right thinking that values don't match. But the definitive question is how do I stop Firefox from messing around with that file? I'm honestly tired of manually editing it every time Firefox stops working. I know that website loading problems can stem from my excessive uptimes but this is an issue I can work around by restarting Firefox from time to time.