Web Debug

Fix broken web applications, from servers to clients.

Troubleshoot IIS with Failed Request Tracing

Failed-request tracing is designed to buffer the trace events for a request and only flush them to disk if the request "fails," where you provide the definition of "failure".

Basic steps

http://www.trainsignal.com/blog/iis-7-troubleshooting

Other reference

Troubleshooting Failed Requests Using Tracing in IIS 7

How to Enable Failed Request Tracing for UNC Hosting

Using Failed Request Tracing Rules to Troubleshoot Application Request Routing (ARR)

Troubleshoot with Failed Request Tracing

Fork me on GitHub