# Appendix H. Troubleshooting Guide

1. The console or the web site cannot be accessed from the computer on which Abyss Web Server is running.
2. Abyss Web Server reports the following error at startup: "Cannot start the host XXX (listening problem)"
3. Abyss Web Server reports the following error at startup: "Cannot start the console (listening problem)"

1. The console or the web site cannot be accessed from the computer on which Abyss Web Server is running.

If you cannot browse `127.0.0.1`, `::1`, or `localhost`, check if you have configured a HTTP proxy in the browser. If so, disable proxy usage for `127.0.0.1`, `::1`, and `localhost`.

2. Abyss Web Server reports the following error at startup: "Cannot start the host XXX (listening problem)"

This error arises when the XXX's host port is already used by another application or if you do not have the privilege to use it. You have to choose another port for the host using the console. Refer to "Solving Ports Listening Problems" for more information.

3. Abyss Web Server reports the following error at startup: "Cannot start the console (listening problem)"

This error occurs when the console port is already used by another application or if you do not have the privilege to use it. Refer also to "Solving Ports Listening Problems" for more information.