There are a couple of things you can do if you cannot change Static IP address & DNS server on Windows 11/10. Try these working fixes.

Your DNS settings atter your browsing experience on a fundamental level, which means using the right DNS server can have immediate effects. Here's how to do it.

To fix “WiFi Doesn’t Have Valid IP Configuration” on Windows, restart your router, update Windows and drivers, flush DNS (ipconfig /flushdns), set IP to auto in Network Settings, reset ...