Windows DNS/IP-Address Issues with IPv6

I recently faced a problem where my notebook did not receive an IPv6 address and, thus, I was not able to open any IPv6-only website. This resulted in the “ERR_NAME_NOT_RESOLVED” error and after I finally found out, that a missing IPv6 address is the problem here, I also found these three commands to solve the problem (for me). Execute them in an Administrator PowerShell Prompt:

ipconfig /flushdns
ipconfig /release
ipconfig /renew

I found the solution in an answer in the Microsoft Windows Forum: Not getting IP Address on Wi-Fi interface after upgrading to Windows – Microsoft Community