Could not load file or assembly 'System.Runtime.Serialization

Hi all,

I m using newtonsoft.json for json Serialization

 rootobject = JsonConvert.DeserializeObject<T1>(jsonResult);

its working fine for android but when i run in windows it got exception like

 Could not load file or assembly 'System.Runtime.Serialization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' or one of its dependencies

please help me resolve this, i try to add reference System.Runtime.Serialization dll manually in win project but it not added could you please help me

Thanks,
Manikandan