How to run Microsoft.CognitiveServices.Speech on Windows Server 2012 R2

I need to convert speech from a wav file into text. So I downloaded the sample C# code project from the Quickstart: Recognize speech using Speech service C# SDK page, and followed the instructions on the page.

It works in Windows 10, but I need the project to work on Windows Servers 2012 R2 and it doesn't work on Windows Servers 2012 R2.

When I run it on Windows Servers 2012 R2, I press the 3 key for the 3. Speech recognition with file input option. But when it tries to execute the following code (with valid subscription and region values)

var factory = SpeechFactory.FromSubscription("YourSubscriptionKey", "YourServiceRegion");

The following exception is thrown:

System.TypeInitializationException occurred HResult=0x80131534 Message=The type initializer for 'Microsoft.CognitiveServices.Speech.Internal.carbon_csharpPINVOKE' threw an exception. Source=Microsoft.CognitiveServices.Speech.csharp StackTrace: at Microsoft.CognitiveServices.Speech.Internal.carbon_csharpPINVOKE.SpeechFactory_FromSubscription(String jarg1, String jarg2) at Microsoft.CognitiveServices.Speech.Internal.SpeechFactory.FromSubscription(String subscription, String region) at Microsoft.CognitiveServices.Speech.SpeechFactory.FromSubscription(String subscriptionKey, String region) at MicrosoftSpeechSDKSamples.SpeechRecognitionSamples.d__2.MoveNext() in C:\temp\csharp_samples\speech_recognition_samples.cs:line 86

Inner Exception 1: TypeInitializationException: The type initializer for 'SWIGExceptionHelper' threw an exception.

Inner Exception 2: DllNotFoundException: Unable to load DLL 'Microsoft.CognitiveServices.Speech.csharp.bindings.dll': The specified module could not be found. (Exception from HRESULT: 0x8007007E)

I think the Microsoft.CognitiveServices.Speech.csharp.bindings.dll doesn't like running on Windows Server 2012 R2, as it exists in the bin folder (and isn't missing) and works on Windows 10. I wrote the following code in a little Hello World console project and it threw the same exception running on Windows Server 2012 R2.

class Program
{
    [DllImport("Microsoft.CognitiveServices.Speech.csharp.bindings.dll", CharSet = CharSet.None, EntryPoint = "CSharp_MicrosoftfCognitiveServicesfSpeechfInternal_TRANSLATION_LANGUAGE_RESOURCE_SCOPE_SPEECH_get___", ExactSpelling = false)]
    public static extern int TRANSLATION_LANGUAGE_RESOURCE_SCOPE_SPEECH_get();

    static void Main(string[] args)
    {
        int test = TRANSLATION_LANGUAGE_RESOURCE_SCOPE_SPEECH_get();
        Console.WriteLine($"API value: {test}");
    }
}

And I've tried running as Administrator in case it was a permission thing. But that didn't do anything.

Can someone please help me \ show me what I need to do to run the Speech service sample on Windows Server 2012 R2?

Check your platform settings for your project in Build > Configuration Manager.
It must be set to x64 or x86, not to AnyCpu.