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If you are Experiencing issues with a Pi-hole install that has non-standard elements (e.g you are using nginx instead of lighttpd, or there is some other aspect of your install that is customised) - please use the Community Help category.
Expected Behaviour:
Pihole configured as DNS and DHCP server working normally
Actual Behaviour:
Windows 10 Laptops lose Wifi connection 2-4 times a week.
Running ipconfig shows that ipv6 address is assigned but not the ipv4
Mobile phones connected via WiFi work fine and wifi doesn't drop.
That screenshot indicates a hardware problem with your PC's network equipment. Either your Ethernet cable or ports are faulty or unplugged, or your WiFi is dropping connections (which there are plenty of potential causes for).
That would be in line with your observation that other devices have no problem with Pi-hole's DHCP or DNS, so it doesn't look like a Pi-hole issue.
echo "log-dhcp" | sudo tee /etc/dnsmasq.d/99-debug-dhcp.conf
pihole restartdns
and then
tail -f /var/log/pihole.log
When you reconnect your clients from now on, you should see the DHCP leases your Pi-hole hands out to your clients. Try this with a few clients you know are working and then with the Windows 10 PC that is not working. Compare the results and everything should get much obvious.
