If I loose internet, will it prevent me from logging in?

I linked my user account to my Microsoft account. I have unreliable internet sometime. If the internet isn't working, will I still be able to log in to my account?

no then it asks the previously used password. you can use it and sign in. :)

Thats good to hear. It would be an awful idea to lock you out of your account just because you have unreliable internet.