To fix a DNS probe finished bad config error, follow these steps:

1. Check the hostname: First, double-check the hostname and make sure it corresponds with the URL you’re trying to use. If the hostname is incorrect, update it to the correct one.
2. Flush the DNS Cache: Flush your computer’s DNS cache to ensure that the changes you made take place.
3. Change the DNS settings: Go to the Network and Sharing Center settings in Windows and change the DNS settings to Google Public DNS.
4. Reboot: Reboot your computer.