class not registered(Exception from HRESULT:0X80040154(REGDB_E_CLASSNOTREG)

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C#

Windows

in my project running time this messagebox error will be occured ,
what can i do for that error and how to solve the error..
tis coding run in windows applications

protected override void OnCreateControl()
       {
           rdpc = new AxMSTSCLib.AxMsRdpClient4();
           rdpc.OnDisconnected += new AxMSTSCLib.IMsTscAxEvents_OnDisconnectedEventHandler(rdpc_OnDisconnected);
           this.Controls.Add(rdpc);   //here this error occured      
           rdpc.Dock = DockStyle.Fill;
           base.OnCreateControl();
       }