Enabling debug logging for Claims Aware Applications
Place the following in your applications web.config file. Place this after the </system.net> section of the file.
<system.diagnostics>
<switches>
<add name="WebSsoDebugLevel" value="15" />
</switches>
<trace autoflush="true" indentsize="3">
<listeners>
<add name="ADFSLogListener" type="System.Web.Security.SingleSignOn.BoundedSizeLogFileTraceListener, System.Web.Security.SingleSignOn, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, Custom=null" initializeData="c:\adfs\logs\" />
</listeners>
</trace>
</system.diagnostics>