As reported here by rtv (Developer) https://forum.team-mediaportal.com/390072-post109.html
This will stop streaming and you will not be able to start TVServer config.
What you need to do.
Go here C:\Windows\System32\drivers\etc
Open host file with notepad, the last 2 lines in below picture is what you need to have for things to work correctly.
127.0.0.1 localhost
::1 localhost
is the important bit, just cut and paste there.
Hopefully everything should now work correctly, no reboot necessary.
Thanks to rtv for finding this so quickly.
This will stop streaming and you will not be able to start TVServer config.
What you need to do.
Go here C:\Windows\System32\drivers\etc
Open host file with notepad, the last 2 lines in below picture is what you need to have for things to work correctly.
127.0.0.1 localhost
::1 localhost
is the important bit, just cut and paste there.
Hopefully everything should now work correctly, no reboot necessary.
Thanks to rtv for finding this so quickly.