# E011 — Port conflict on DinD TLS port (https://jackin.tailrocks.com/reference/errors/E011/)



**E011**: Port conflict on DinD TLS port

## What to try [#what-to-try]

Stop the process using the conflicting port, or restart the DinD network stack. Run `jackin prune` if the port is held by a stale instance.

## See also [#see-also]

* Run `jackin doctor` for a full pre-flight health check.
* Pass `--debug` to any `jackin` command to enable diagnostic tracing.