What you will achieve

Faster hostname resolution on Windows by identifying slow DNS servers and switching to reliable resolvers.

1) Measure the symptom

Slow DNS feels like a long pause before a site starts loading, while the page itself loads quickly once started. Test with:

nslookup www.microsoft.com
nslookup www.microsoft.com 1.1.1.1

If the second command returns much faster, your configured DNS server is likely the bottleneck.

2) See which DNS Windows is using

ipconfig /all

Check DNS Servers under your active adapter. Router-provided DNS (192.168.x.1) is common but not always fast or trustworthy.

3) Set reliable public resolvers

Settings → Network & internet → Wi‑Fi or Ethernet → hardware properties.
Edit DNS → Manual → IPv4 on.
Enter primary and secondary servers, e.g. Cloudflare 1.1.1.1 and 1.0.0.1, or Google 8.8.8.8 and 8.8.4.4, or Quad9 9.9.9.9.
Save, then flush DNS.

4) Disable DNS over HTTPS for testing

Settings → Privacy & security → DNS over HTTPS — set to Off temporarily to see if DoH provider conflicts with manual DNS. Re-enable with a provider you trust once stable.

5) Router and VPN interactions

VPN clients often force their own DNS — disconnect VPN while testing.
Router DNS proxy or parental controls can add latency — test with manual DNS on the PC.