Very late since I forgot about this thread until recently, but figured I post what I figured out in case anyone else had issues. I initially tried with both Chrome and Microsoft Edge, and since both of them returned the same error, I assumed it wasn't a browser issue and made the thread. It was only a while later that I desperately attempted to use Firefox and it somehow worked. Still a little surprised that Microsoft Edge couldn't seem to handle its own company's login, but regardless, the answer seems to be to just use Firefox for login.