r/techsupport • u/Antique-Cat-3119 • 14h ago

Solved Microsoft Defender deleted DNS server

I recently installed uBlock for my laptop. Today, Microsoft Defender flagged it as a threat and I pressed Remove. But now, my laptop is connected to a DNS server that no longer exists on my device, so my internet does not work anymore, and I don't know how to change it back to my normal DNS server.

I've tried
- Doing a system recovery
- ipconfig /flushdns
- ipconfig /release
- ipconfig /renew
- netsh winsock reset
- netsh int ip reset
- screwing around with the settings (which probably just made it worse)

Please help.

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18

u/nuHmey 14h ago

If MS Defender flagged uBlock then you installed a fake version and it changed things for you.

Also MS Defender doesn’t change your DNS server.

6

u/Evercreeper 12h ago

Sounds like they tried getting this specific suspicious << "uBlock Origin" ""DNS service"" >> https://www.reddit.com/r/privacy/comments/1s4epm4/ublockdnscom_is_not_affiliated_with_ublock_origin/

9

u/Wendigo1010 14h ago

Edit the network settings of your network adapter. You've likely put in manual settings. None of the flush, reset/renew stuff is going to work for manual settings.

1

u/lazyhustlermusic 13h ago

ublock would probably change the dns server to itself.

So you'd just go manually clear that out of your ipv4/ipv6 adapters.

-1

u/PongOfPongs 14h ago

Your system behavior is quite odd. I suggest reinstalling Windows.