Error: One or more processes are already bound to port 53: mDNSResponder

Posting this here since the original thread was prematurely closed.

After upgrading docker desktop on mac to 4.24.x, I was getting this error when starting warp on MacOS:

The WARP agent must be the only process responsible for DNS resolution on this device. One or more processes are already bound to port 53: mDNSResponder

The solution seems to be:

  • Edit ~/Library/Group\ Containers/group.com.docker/settings.json and set “kernelForUDP” to false
  • Restart Docker Desktop

https://github.com/docker/for-mac/issues/7008#issuecomment-1746653802
https://docs.docker.com/desktop/release-notes/#for-mac-3
https://community.cloudflare.com/t/zerotrust-unable-to-connect-port-53-bound/486081

4 Likes

Worked for me

It worked for me too!
Thanks!