After a long period of home office it seemed that my computer did not want to work well in any other WiFi network any more. It showed “no internet connection” in every other network.
When looking into the connection settings, I saw that it was still showing my home DNS server in the settings. No matter what network I was connecting to, be it my phones hot spot, etc still the same.
Example output of the netsh command:
C:\WINDOWS\system32>netsh interface ipv4 show config name=”Wi-Fi”
Configuration for interface "Wi-Fi"
DHCP enabled: Yes
IP Address: 10.1.0.38
Subnet Prefix: 10.1.0.0/24 (mask 255.255.255.0)
Default Gateway: 10.1.0.1
Gateway Metric: 0
InterfaceMetric: 70
DNS servers configured through DHCP: 172.31.1.1
Register with which suffix: Primary only
WINS servers configured through DHCP: None
So I tried using the “netsh” command to reset it by entering a static DNS:netsh interface ipv4 set dnsservers name="Wi-Fi" source=static address=8.8.8.8
Now I had working name resolution, but this is not a fix for me to have to set a correct DNS server for all the networks I go to, so I set it to DHCP settings again.netsh interface ipv4 set dnsservers name="Wi-Fi" source=dhcp
Name resolution broke again, as the “show config” returned my home DNS again.. So I turned to the Windows registry to find where that IP address exists. Find yielded the following result. In Computer\HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Interfaces\{interface-uid} there was a registry key called ProfileNameServer. It had a value that matched my problematic DNS server entry. After deleting registry key and reconnecting to the WiFi I finally saw that the DHCP given DNS server list was being used and network connection was working normally again.