Since I managed to restore the Internet, I decided to try again. I also wanted to show everything how it works for me.
1. Installed the program, the Internet immediately disappeared. At the end of the installation, the "Restart" message didn't work. I rebooted manually.
2. Disabled IPv6, no internet.
3. Rebooted, the Internet does not work. The program crashes at some point.
4. Error in "DNSСcope" delete dialog
5. When I uninstalled the program, it does not restart the computer when I click OK. Maybe it's just a message that I should do it myself.
6. To restore the Internet, I deleted the network card in the device manager. Next, I clicked search for hardware. When the network card appeared, the Internet immediately earned. Before that, I restored IPv6, but it did not help.
Video where the program crashes
network hardware
IPv6
typo
Should something be changed
here?