The native dll will be copied to the bin directory when your project is being build. The
Are you really sure that your application is running in 64 bit? It feels like you are getting this error because your application is 32-bit. Which version of the library do you see in this folder: %temp%\Magick.NET.net40-client.7.0.4.701? That folder is created by the AnyCPU library.
.targets file that does this should be added to your csproj file. Are you really sure that your application is running in 64 bit? It feels like you are getting this error because your application is 32-bit. Which version of the library do you see in this folder: %temp%\Magick.NET.net40-client.7.0.4.701? That folder is created by the AnyCPU library.