Can you please launch Brave and go to Menu --> More tools --> Guest profile to launch a guest profile, close your original profile window, then try visiting https://login.microsoftonline.com/ again and see if it lands on the proper page?
I’m wondering if it caused by an extension you have installed in the browser at this time. If you have any, can you please try disabling them and then testing again?
Unfortunately not, It might reveal company information, they’re very strict about that at my work. I’ll try and delete my user data and see if that helps.
Got it — yeah definitely don’t want you to expose any sensitive information. Out of curiosity, when it sends you to the Google login, if you login to your Google account, what happens after that?