Lync 2010 SDK Visual Studio Project Settings
Setting up your solution to add Microsoft Lync 2010 API functionality is simple and requires just a few steps.
Project Settings
Whether your project creates a library to act as an adaptor to be plugged into many of your Windows Forms executable projects or puts Lync 2010 API functionality directly into a Windows Forms project, you set project properties in exactly the same way.
Application Settings
On the Application tab of your project settings dialog, set the Target Framework to .NET Framework 3.5.
Note
You do not need to add an application manifest to your solution or update an existing manifest for the Lync 2010 API.
Build Settings
On the Build tab of your project settings dialog, set the Platform target to Any CPU.