As per many users, the fix for this issue is very simple. Just disable IPV6 in your Adapter settings. After disabling the IPV6, be sure to restart the Teamviewer or the computer itself.
Make sure to restart your computer and internet connection after disabling the IPV6, some users reported that it doesn’t work. The problem was the connection didn’t reset and so that the problem was still there. So, restart your computer and internet connection to see the changes.