Problem with server in minecraft?

I can't get a Minecraft server. Whenever I want to say "Failed to authenticate your connection!" or "Not authenticated with Minecraft.net". Can someone help me?

Start anew

Does your internet work

Yes

Since when is it more and so join the server

Close the game. Log out of the launcher and log in again

Before you can play you have to log in to the launcher in the top left. Of course, this only works if you bought Minecraft on the official website. With an old account that is not possible.

Buy the game and it stops…

If he had bought…