#Need help with server joining
3 messages · Page 1 of 1 (latest)
Google it before asking a help.
The "Invalid Session" error in Minecraft typically occurs when your client loses authentication with Mojang/Microsoft servers, often caused by playing too long, logging in elsewhere, or launching the game twice. To fix it, immediately restart the Minecraft launcher and game, sign out and back into your account, or wait for the authentication to refresh.