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shell-things/Windows/DoH/README.md

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DNS over HTTPS in Windows 11

Requires Windows 11.

  • GPO-EnforceDoH.reg enables the group policy to require DoH. However it didn’t seem to work for me or it allowed me to set the DNS server to not use DoH.

  • DohWellKnownServers adds DoH support for multiple IPv4 & IPv6 addresses that Windows 11 isn’t shipping by default, currently:

    • Adguard
    • Cloudflare antimalware
    • DNS0 standard
      • Zero
      • Open
      • Kids
    • Mullvad
    • Mullvad Adblock
    • Quad9 ECS (Windows 11 defaults include Quad9 default)
    • TREX (actually points to Quad9 as per their documentation)

Configuration

Once Windows knows about the DoH servers (DohWellKnownServers.reg), DNS-over HTTPS can be enabled for:

  • All networks: Windows-I (Settings) -> Network & Internet -> Advanced network settings -> WLAN -> View additional properties -> DNS Server assignment -> Edit
    • Same place for Ethernet etc.
  • Specific network: Windows-I (Settings) -> Network & Internet -> WiFi -> Connected SSID -> DNS server assignment -> Edit
    • Note: if the all networks one is configured, there is a warning about it not being used.