failed to login: invalid session (try restarting your session or your launcher)
why does it not allow me to join servers with alts when I fill out the format and login it says (failed to login: invalid session (try restarting your session or your launcher) did mojang recently had an update to prevent this?
If you're using TheAltening, they're currently working on a fix for their service. If it's your account, you'll need to migrate to use it correctly
Also if you're trying on realms it will not work, since alt manager will modify the session ID