Resolution for (Exception from HRESULT: 0×800736B1)

I got this error when I tried to use a C++ DLL, compiled by Visual Studio 2005 SP1, in a web application (ASP.Net 2.0):

“This application has failed to start because the application configuration is incorrect. Reinstalling the application may fix this problem. (Exception from HRESULT: 0×800736B1)”

This happens due to a lot of reasons, you can check them at: http://blogs.msdn.com/eldar/archive/2006/06/07/621501.aspx

The reasons in my case were:

1- The target C++ DLL depends on 3 DLLs: msvcm80.dll, msvcp80.dll, and msvcr80.dll version 8.0.50727.762. This is because the SP1 is installed on the development machine, while the production machine has these files but version 8.0.50727.42, thus, I installed Microsoft Visual C++ 2005 SP1 Redistributable Package (x86) on the production machine. You can get it from: http://www.microsoft.com/downloads/details.aspx?familyid=200B2FD9-AE1A-4A14-984D-389C36F85647&displaylang=en

2- My bad! I forgot to change the DLL’s active configuration to release, so you always have to check that before you deploy your application.

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