Issue with DHCP and IPv4 addresses - some websites not found

[Crimliar]

Looking at the ChatGPT log, it looks like it's very politely telling you that one of your switches is not a switch, but a router!

[WSH]

As I said, a blindingly obvious misconfiguration.

[jezzer]

Yes. Problem was it’s no longer on the network. I had experimented with using an old router as a switch, trying to turn off the WiFi and router functionality. It didn’t work, so I removed it. However Windows remembered it was there and then couldn’t decide which router to use for DHCP. Crock of ****!

[Trillian796]

Glad you have sorted it. Network issues can be so frustrating. 

Thanks for the link, I have saved the page as there are a few useful commands/ways to do things in the transcript.

Cached addresses/gateways/DNS are so often the problem in network issues. Have found in the past Windows hates the ethernet adapter and wifi both being enabled. It's easy confused, poor little thing 😉  My usual first step in debugging is that something somewhere has been cached.

Maybe obvious I know, but have found that 'forgetting' the network (in wifi config on Windows machines) and then a reboot can be a good way of clearing issues where it's in a muddle. (Always need to make sure you know the password for the WIFI before doing this, just in case anyone is reading this later, and yes I do know people who would blindly do it 😞 ). Once rebooted then selecting the network and connecting to the WIFI again. 

I tend to use this as a first step.