have create a application for text to speech using Speechlib SpVoice. it is working fine with windows application.
But when i Create windows service using same code . It give me this error
System.Runtime.InteropServices.COMException (0x8004503A): Exception from HRESULT: 0x8004503A at SpeechLib.ISpeechVoice.Speak
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Ramesh MaruthiPosted Oct 10, 2014, 12:07 PM
Please look at this below links hope this helps you :)
http://www.solvusoft.com/en/files/missing-not-found-error/dll/windows/microsoft/msdn-disc-2426-21/interop-speechlib-dll/
http://vasudevtroubleshooting.blogspot.com/2008/11/systemruntimeinteropservicescomexceptio_18.html