Firrt of all, please make sure that you are using the correct username and password combination when logging onto the launcher. If you're not sure, you can check these credentials by using them to login to your Nerd Kingdom Account on our website. If you are unable to login there as well, you can request a password reset using this page.

If your login credentials are correct and you are still receiving these error messages when attempting to login via the launcher, please check to see whether you happen to have any firewall software running on your system. If you do, then it is possible that it's not set to allow TUG through. If you are running Windows Firewall, you can check to see whether it's allowing TUG through (and change it to do so, if it's not) using the instructions on this page:

If neither of these solutions resolve the issue, please send us an e-mail at