Help

as I enter the server? my computer says "login failed session invalidate" help me please

If it says "Invalid Session" somewhere, then that means that you need to close Minecraft completely (click Quit Game) and then open it again.

^^ Also if that doesn't work, I suggest restarting and or updating your Minecraft and computer. I hope this helps!!

I suggest your totally disconnect your account from the launcher then reconnect it again!