The type or namespace 'SKYPE4COMLib' could not be found - Unity3d

Question

Apologies for the vague title.

I am integrating Skype in to my Unity application. So I added Skype4Com.dll in Visual Studio and the plugins folder of my Unity project, but the editor throws "error CS0246: The type or namespace name `SKYPE4COMLib' could not be found. Are you missing a using directive or an assembly reference?"

When I added the same dll to a different windows form application, the application built successfully.

Here is the code,

using UnityEngine;
using System;
using System.Collections.Generic;
using SKYPE4COMLib;

public class AudioManager : MonoBehaviour
{
   void Start()
   {
      Skype skype = new Skype();
      if (!skype.Client.IsRunning)
      {
        skype.Client.Start(true, true);
      }
   }
}

The dll has been added as a reference in Visual Studio.

Below is the error in Unity

Am I missing something?

Answer 1

Did you check if your dll is compatible with Unity? Unity 5 only supports up to .Net 3.5 when importing dlls.

Answer 2

I finally fixed it. The Skype4COMLib.dll that I got from C:\\Program Files (x86)\\Common Files\\Skype was not the correct dll. Unity was looking for Interop.SKYPE4COMLib.dll