bjproc

Glad it worked for you. If you would please mark your thread as closed.

This worked, I changed it to the open DNS and surfshark site worked. Thank you. Just wondering why changing it sorted the issue?

Is it possible to get there via VPN? Or to disable VPN.

1. Try disabling all browser add-ons and test.. 2. Also disable vpn and test. 3. What anti-virus is he using? If it is anything other...

This is probably true, please have a look at the rest of the advice from glasskuter

I'll uninstall his duck duck go browser to see if that does anything

It's just windows defender & windows firewall. He can't get into surfshark to install the VPN. There is also a windows 10 Lenovo M700...

I gave my father in law a windows 11 Lenovo m920q, fresh install of windows. He's not having issues with being able to get onto sites...