This document describes how to troubleshoot Cisco ECE Web server web.config file and shows how to solve a common 500.19 Internal Server Error when the file becomes corrupted or is modified.
Cisco recommends that you have knowledge of these topics:
Cisco Email and Chat Server (ECE)
Microsoft Internet Information Services (IIS)
The information in this document is based on Cisco ECE 11.6.
The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, ensure that you understand the potential impact of any command.
Step 1. Ensure all the services are active on all the servers in ECE deployment and no process is in stopped state.
Step 2. If you notice in this case that the error refers to custom headers, since most of the times it is hard to track what has changed to cause the connection to break, it is best to replace the faulty file.
To do so, navigate to C:\inetpub\wwwroot\web.config