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POCreate OLE object from Windows service
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  1. POCreate OLE object from Windows service
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    copied!<p>I have Windows service that tries to create and use OLE object (namely - Matlab via automation) with this code:</p> <pre><code>var type = Type.GetTypeFromProgID("matlab.application"); var matlab = Activator.CreateInstance(type); </code></pre> <p>Everything works OK on my machine (Win7 x64, with single user), but on production server (Win 2008 R2 Datacenter SP1) I have problems. It works there if I start service as usual exe file (I have this possibility), but if I try to start it as service, it returns excepion:</p> <blockquote> <p>System.Runtime.InteropServices.COMException (0x80080005): Retrieving the COM class factory for component with CLSID {AC62BA4E-6ED9-4F33-9967-B260419E5EAD} failed due to the following error: 80080005 Server execution failed (Exception from HRESULT: 0x80080005 (CO_E_SERVER_EXEC_FAILURE)).</p> </blockquote> <p>I tried:</p> <ul> <li>start service under System/Administator/another user account</li> <li>check configuration with dcomcnfg utility (it helps actually, I had another error, but now all permissions for "matlab.automation" dcom object are granted)</li> <li>ater call of "Activator.CreateInstance" there is Matlab.exe process in memory, but it just hangs..</li> </ul> <p>So - how can I use Matlab automation object from Windows service?</p> <p>Thanks a lot!</p> <p><strong>UPDATE</strong></p> <p>Probably it will help - production server is Amazon EC2 instance, so it has also Terminal Server. Maybe this could be a problem? Because I had problem with mutexes before, and it was resolved by creating global mutex..</p> <p><strong>UPDATE 2</strong></p> <p>Exception occurs always in 120 seconds (exactly), so it looks like OLE client doesn't see call of CoRegisterClassObjects, or probably any other call. In any case - delay between call of Activator.CreateInstance and exception is exactly 120 seconds.</p>
 

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