Wifi suddenly stopped working

[Martyimac]

Out of the blue my M1 iMac no longer works on wifi even though it says I am connected and all the settings look correct. I deleted the original network, shutdown, restarted and no joy. Eero says the iMac is connected so it has to be something within the machine either hardware or the most recent public beta goobered something up.

Any ideas?

 

[Slartibart]

Not sure wethe4 I understand - the iMac connects via Wifi to your router but e.g. a browser like Safari throws an error when trying to open a webpage? Try setting the DNS manually to e.g. 1.1.1.2

 

[Martyimac]

Not sure wethe4 I understand - the iMac connects via Wifi to your router but e.g. a browser like Safari throws an error when trying to open a webpage? Try setting the DNS manually to e.g. 1.1.1.2

Safari only says it can't connect after a while. Doesn't have a corresponding error code.

 

[Slartibart]

Try setting the MTU size to 1458.

 

[Martyimac]

It seems I have found the issue. There were suggestions on the feedback assistant (I am on the Ventura public beta), to uninstall my VPN. I ignored that since the iMac has been running my VPN successfully since the first beta was installed. Well, since I was out of ideas I decided, what the heck, I'll uninstall my VPN and SUCCESS!!! I am posting this using wifi on my iMac. WOOHOO!