If nothing of value comes up in your errorlogs or in the event viewer. Just follow this guide to enable Tracing in IIS7+
Source: Troubleshooting Failed Requests Using Tracing in IIS 7 : The Official Microsoft IIS Site
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If nothing of value comes up in your errorlogs or in the event viewer. Just follow this guide to enable Tracing in IIS7+
Source: Troubleshooting Failed Requests Using Tracing in IIS 7 : The Official Microsoft IIS Site