Had trouble connecting my sons Nintendo switch to wifi the last few days due to an dns error. To cut a long story short I have noticed when going into router settings and turning off the firewall it connects no problem.
Is it safe to just leave the firewall off or have virgin changed something on the router which I can change back???
Found this on the forum and it seems to have sorted it for the minute.
Re: Nintendo Switch cannot resolve DNS
14 hours ago
I figured it out.
You need to sign into the Hub 3.0 control panel on your browser and go to Advanced Settings > Wireless > MAC Filtering and the MAC address for the switch will likely be listed there. Remove it from the list and reconnect on the switch again. Should be g2g.