I recently updated two laptops from windows 8.1 to windows 10 doing a clean installation. I already had my router configured on the Norton Connect Safe DNS and it was working fine. After the update I noticed it doesn't work on the laptops anymore but other devices, phones, it was still functioning.
I proceeded with the installation of the drivers for each laptop and after the complete installation I checked again and I found it started to work on the ACER but no luck with the other laptop a "Dell Inspiron". I tried to flush the DNS on the dell but in vain. Changed the router configuration to Open DNS Family Shield works on all but the Dell.. keep in mind it used to work just fine on the dell before windows update. what could be causing this problem? and how to solve it?