I am having this exact same problem with my stuido 2+ (about to return it) - verbatim.
I have run windows update, I have run the diagnostics tool, I have done the command prompt recommendation, I have uninstalled the network adaptor using device manager and then windows reinstalled. I then re-ran windows update. No other computers get this issue even when they are in the same room. Doesn't mater what browser I am using.
Main error I get is: Your connection was interrupted. A network change was detected. ERR_NETWORK_CHANGED.
I have only ever linked to one wifi network - new computer few days old.
I get this error even regardless of VPN.
Any suggestions?