> For the complete documentation index, see [llms.txt](https://docs.emaildelivery.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.emaildelivery.com/docs/common-installation-issues/bind-address-already-in-use.md).

# Bind: address already in use

This is the error you'll get when another application is already running on the same IP address you're trying to install the ESP platform on, most of the time this is the https port, which is 443. 

{% code overflow="wrap" %}

```
Error response from daemon: driver failed programming external connectivity on endpoint edcom-proxy (7ee39b6ffb050bf61aa2e132da7044e00836d87319ee60751b301f4a613d7132): Error starting userland proxy: listen tcp4 1.2.3.4:443: bind: address already in use
```

{% endcode %}

If the ports the platform needs are blocked by another application, it will fail to start.

For more information on this topic, see this page in the docs:

{% content-ref url="/pages/JV2ncFVmRAOSCMAsNlJa" %}
[Resolving port conflicts with a second IP](/docs/common-installation-issues/resolving-port-conflicts-with-a-second-ip.md)
{% endcontent-ref %}