An attempt was made to load a program with an incorrect format - only when published in the hoster

I have a C# asp.net Project that calls a .dll file made in C++. Running locally in my computer, it works well. But, when publishing it on line in my web site hoster, there is an error: “An attempt was made to load a program with an incorrect format. (Exception from HRESULT: 0x8007000B)”.

I found similar problem in other thread, but after many attempt I did not work.

Unable to load DLL (Module could not be found HRESULT: 0x8007007E)

Note that the problem only happens after publishing the project and saving the files in my web site hoster. Some links showing my setup.

Link1; Link2; Link3

I am not sure if there is any relation, but before that I was having the problem: “Unable to load DLL (Module could not be found HRESULT: 0x8007007E)”. Using “dependency walker”, I identified some missing dll files (such as: kernel32.dll, ntdll.dll, vcruntime140d.dll...) I and added them in the on-line bin folder. Then, I started having the problem I first mentioned.

I continued the investigation and realised I was using a dll created by debug. Then I used the one created by release, and then I have again the error “Unable to load DLL (Module could not be found HRESULT: 0x8007007E)”. Using “dependency walker”, there is huge list of dll files, see link4. Not sure if it makes sense, because the list is long. Any help? Link4

Thanks.

Continuing the search, the problem was solved by including DLL files from the Visual Studio installation folder, in my case: C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC More info here: https://msdn.microsoft.com/en-us/library/8kche8ah.aspx