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HappyEyeballsV3Enabled

Use the Happy Eyeballs V3 algorithm for connection attempts

Supported versions

  • On Windows and macOS since 137 or later

Description

Controls whether Microsoft Edge uses the Happy Eyeballs V3 algorithm to optimize connection attempts. This algorithm improves reliability and performance in dual-stack (IPv4/IPv6) networks by racing connection attempts across IP versions and HTTP protocols (e.g., HTTP/3 vs. others). For more details, see https://datatracker.ietf.org/doc/draft-pauly-happy-happyeyeballs-v3.

Enabled: Uses the algorithm for connection attempts.

Disabled or not configured: Disables the algorithm.

Note: This policy supports dynamic refresh.

Important: This policy is temporary and will be removed in a future version.

Supported features

  • Can be mandatory: Yes
  • Can be recommended: No
  • Dynamic Policy Refresh: Yes
  • Per Profile: No
  • Applies to a profile that is signed in with a Microsoft account: Yes

Data type

  • Boolean

Windows information and settings

Group Policy (ADMX) info

  • GP unique name: HappyEyeballsV3Enabled
  • GP name: Use the Happy Eyeballs V3 algorithm for connection attempts
  • GP path (Mandatory): Administrative Templates/Microsoft Edge/Network settings
  • GP path (Recommended): N/A
  • GP ADMX file name: MSEdge.admx

Example value

Enabled

Registry settings

  • Path (Mandatory): SOFTWARE\Policies\Microsoft\Edge
  • Path (Recommended): N/A
  • Value name: HappyEyeballsV3Enabled
  • Value type: REG_DWORD

Example registry value

0x00000001

Mac information and settings

  • Preference Key name: HappyEyeballsV3Enabled
  • Example value:
<true/>

See also