Need help with server joining

[austere shoal]

Everytime I try to join a server (say, the questcraft server) i keep getting a invalid session notice.

What can I do to fix this, I want to join my friends server for a stream tomorrow.

[shy lava]

To help others find answers, you can mark your question as solved via Right click solution message -> Apps -> ✅ Mark Solution

[smoky surge]

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.