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POCOM component works 100% from a console app, but fails when called from a service
 

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  1. POCOM component works 100% from a console app, but fails when called from a service
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    <p>I need your advice for the following C# code:</p> <pre><code>EgarDDSEnt.IIVDDSEnt dds = null; // This line executes fine. dds = new IVDDSEnt(); // This line fails with an exception ... dds.Connect("username", "password"); // ... which makes this line fail too. </code></pre> <p>Here are the symptoms:</p> <p>Windows Server 2008 R1:</p> <ul> <li>Code fails when executed from a Windows service app.</li> <li>Code works 100% when executed from a console app.</li> </ul> <p>Windows 7:</p> <ul> <li>Code works 100% when executed from a Windows service app.</li> <li>Code works 100% when executed from a console app.</li> </ul> <p>The class IVDDSEnt() is a COM object that is installed you install the "ivolatility SDK".</p> <p><strong>Update:</strong></p> <ul> <li>When I execute "System.IO.Directory.GetCurrentDirectory()" from the console application, it returns "D:\MyDevDirectory\"</li> <li>When I execute "System.IO.Directory.GetCurrentDirectory()" from the service application, it returns "C:\windows\system32\".</li> <li>The application is actually the <em>same binary</em> for both service and console (its a hybrid app that can run in console mode, or install itself as a service if you pass "-service" to it on the command line).</li> </ul> <p><strong>Update:</strong></p> <p>Added try/catch, and "e.GetBaseException" (defined as "Returns the exception which is the root cause of one or more subsequent exceptions"):</p> <pre><code>System.Runtime.InteropServices.COMException (0x80080005): Retrieving the COM class factory for component with CLSID {FA944FE7-AEB8-4B5B-8315-11D19B1F6264} failed due to the following error: 80080005 Server execution failed (Exception from HRESULT: 0x80080005 (CO_E_SERVER_EXEC_FAILURE)). at PhiDataOnSchedule.ConsoleApplication.MyMain(Boolean dummyRun) </code></pre> <p><strong>Update:</strong></p> <p>Still can't fix the problem - the easiest way might be to just upgrade from Windows Server 2008 R1 to Windows Server 2008 R2 (if it works on Win7, and Windows Server 2008 R2 has a Win7 core, perhaps it'll work around the underlying issue somehow?).</p>
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    1. CO"fails with an exception" you think it would be useful to tell us **what** exception?
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      1. USRemus Rusanu
    2. CODefinitely need the exception dump or we're not going to get anywhere.
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      1. USSquirrelsama
    3. COThe exception didn't seem to be very helpful: 'MyHelper.LogThis.OnException: Exception "NullReferenceException": "Object reference not set to an instance of an object."'. Is there any way I can get a more comprehensive exception dump?
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