Port issue with version 4.35

[izzy0909 (Igor Martinovic)]

OS Version/build
MacOS 15.0.1

Docker Desktop version
Have tried 4.35.0 (172550)

Steps to reproduce
Upgrade to 4.35

After the update to 4.35.0 (172550) I started getting an error that the port is in use for one of my containers. If I try restarting the container it starts successfully. I observed that the port “8888” is in use when I start Docker Desktop and no containers are running.
Downgrading to 4.34.3 (170107) solves the issue.

Cannot start Docker Compose application. Reason: compose [start] exit status 1. Container db-sw65x Starting Container db-sw65x Started Container sw65x Starting Error response from daemon: Ports are not available: exposing port TCP 0.0.0.0:8888 → 0.0.0.0:0: listen tcp4 0.0.0.0:8888: bind: address already in use

[deanayalon]

Docker listening on port 8888 after latest update; no running containers

I’m a bit perplexed by this. I just updated Docker to the latest 4.35.0, running on Windows 11, and after that I found that one of my containers which was configured to listen on port 8888 kept returning 404 not found error. After quite some digging I actually realized it wasn’t the container that was listening on that port. I stopped all containers, and port 8888 was still listening and responding with 404. netstat reports the PID listening on this port corresponds to “com.docker.backend.exe” …

[izzy0909 (Igor Martinovic)]

This solved the issue, huge thanks.

[deanayalon]

Notifying here as well - this has been resolved as of v4.35.1

Release notes