in cases where I am using Lync 2010 SDK (which depends on having the Lync 2010 client being installed and operational) in a web application and that client is closed, can I using the Lync 2010 SDK to start client application ?
You can do without using Lync SDK, Instead you can try out this
bool isRunning = Process.GetProcessesByName("Communicator") .FirstOrDefault(p => p.MainModule.FileName.StartsWith(@"C:\Program Files (x86)\Microsoft Lync")) != default(Process); if(!isRunning) Process.Start("Communicator");
May be this will be helpfull to you.
thnks and regards.