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    copied!<p>It's hard to tell what might be the problem. You could turn on WCF tracing and diagnostics which can give you some more details.</p> <p>To get you going quickly - in your web (or app) config:</p> <p>1) Add System.Diagnostics section anywhere under configuration element. You can replace path with which ever path you want the files to be stored at.</p> <pre><code>&lt;system.diagnostics&gt; &lt;sources&gt; &lt;source name="System.ServiceModel.MessageLogging" switchValue="Warning, ActivityTracing"&gt; &lt;listeners&gt; &lt;add type="System.Diagnostics.DefaultTraceListener" name="Default"&gt; &lt;filter type="" /&gt; &lt;/add&gt; &lt;add name="ServiceModelMessageLoggingListener"&gt; &lt;filter type="" /&gt; &lt;/add&gt; &lt;/listeners&gt; &lt;/source&gt; &lt;source name="System.ServiceModel" switchValue="Warning, ActivityTracing" propagateActivity="true"&gt; &lt;listeners&gt; &lt;add type="System.Diagnostics.DefaultTraceListener" name="Default"&gt; &lt;filter type="" /&gt; &lt;/add&gt; &lt;add name="ServiceModelTraceListener"&gt; &lt;filter type="" /&gt; &lt;/add&gt; &lt;/listeners&gt; &lt;/source&gt; &lt;/sources&gt; &lt;sharedListeners&gt; &lt;add initializeData="C:\temp\services_messages.svclog" type="System.Diagnostics.XmlWriterTraceListener, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" name="ServiceModelMessageLoggingListener" traceOutputOptions="LogicalOperationStack, DateTime, Timestamp, ProcessId, ThreadId, Callstack"&gt; &lt;filter type="" /&gt; &lt;/add&gt; &lt;add initializeData="C:\temp\services_tracelog.svclog" type="System.Diagnostics.XmlWriterTraceListener, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" name="ServiceModelTraceListener" traceOutputOptions="LogicalOperationStack, DateTime, Timestamp, ProcessId, ThreadId, Callstack"&gt; &lt;filter type="" /&gt; &lt;/add&gt; &lt;/sharedListeners&gt; &lt;/system.diagnostics&gt; </code></pre> <p>2) Under system.ServiceModel add following:</p> <pre><code>&lt;diagnostics wmiProviderEnabled="false"&gt; &lt;messageLogging logEntireMessage="true" logMalformedMessages="true" logMessagesAtServiceLevel="true" logMessagesAtTransportLevel="true" /&gt; &lt;/diagnostics&gt; </code></pre> <p>3) Under C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\Bin\ start SvcTraceViewer.exe. Load both message trace (services_messages.svclog) and service trace log (services_tracelog.svclog). You can either drag drop files in the tool or open one then add another</p> <p>4) Look for red bold letters for a problem.</p> <p>If you want to make your experience editing the WCF configuration more palatable you can use SvcConfigEditor.exe which is found under same folder as SvcTraceViewer.exe (#3). Just open the config file and you should see Diagnostics folder which will allow you to start/stop and configure diagnostics.</p>
 

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