Custom C++ DLL file shows missing oleaut32.dll

Question

Custom C++ DLL file shows missing oleaut32.dll

Khalid Amen 1

I have a C++ DLL file generated in VS 2019. When I use it in C# project, throws an error that unable to upload the C++ DLL file or one of its dependencies. I checked the C++ DLL file using Dependency Tool. It shows that oleaut32.dll and conbase.dll files are missing. I checked them. They are exists under Windows/System32. Even I removed them from additional dependency under property of the C++ project, but they still showing module has missing import.

Custom DLL

David Lowndes 4,726 Reputation points

2021-05-21T19:57:54.673+00:00

Don't treat what the dependency tool is saying too literally when it refers to system DLLs.
You say you have a problem using your DLL from C#, have you tried calling it from a simple C++ console project?
What is the error you got?
Khalid Amen 1 Reputation point

2021-05-24T18:21:22.273+00:00

I have no issue calling it from C# DLL in my local machine. I have have an issue when I call it in Azure web app.

1 answer

Your answer

David Lowndes 4,726 Reputation points

2021-05-21T19:57:54.673+00:00

Don't treat what the dependency tool is saying too literally when it refers to system DLLs.
You say you have a problem using your DLL from C#, have you tried calling it from a simple C++ console project?
What is the error you got?
Khalid Amen 1 Reputation point

2021-05-24T18:21:22.273+00:00

I have no issue calling it from C# DLL in my local machine. I have have an issue when I call it in Azure web app.

Answer 1

There are a lot of reasons why this might be the case ranging from a missing KB fix to an issue on your dev box, but I suspect that it may be a Visual Studio issue. We have a forum dedicated to Visual Studio specialists who will be able to help you:

If you rule out Visual Studio and are still running into issues, please let us know so we can troubleshoot this further.

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Custom C++ DLL file shows missing oleaut32.dll

1 answer

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