I bought the game and I am currently paying for a subscription in "realms" and now I get an error on the screen, it says that I need authenticate to microsoft services, how do I solve that, quickly!!! for windows 10

I bought the game, I bought a subscription to realms, and now after some time playing, it tells me that I need to authenticate to server with Microsoft, what should I do to solve this, quickly!!! for windows 10