I know there's a million of these out there, but every single one I checked says the same things, and those solutions don't work. I'll go to a website, and it'll work fine. But then I'll click 'sign in' and I'll get an untrusted connection. When averaged out literally half of the sites I go to give me this. The solutions presented such as clicking add exception doesn't work because if I click that the website doesn't load properly, it's like half it's HTML is missing or something. Solutions like manually adding exceptions are out of the questions because this isn't isolated to one or two sites, it happens for everything. Even these very support forums give me untrusted connections.

So since none of the solutions provided in other help threads work for me, I am making my own and asking for NEW ones. Because I can't use Firefox if literally half of all websites give me this problem.