Restart your application after an successfull update. Shimmer.Client -> Application.cs Shimmer.Client.RestartApplication -> Program.cs (Create new console project)

Application.cs

using System.Diagnostics;
using System.Reflection;

namespace Shimmer.Client
{
    public static class Application
    {
        /// <summary>
        /// Restart an application.
        /// </summary>
        /// <param name="assembly">Assembly to restart.</param>
        /// <param name="commandlineSwitches">Additional commandline switches that should
        /// be passed to your application during startup.</param>
        public static void Restart(Assembly assembly, string commandlineSwitches = null)
        {
            Process.Start(typeof(RestartApplication.AssemblyRef).Assembly.Location,
                string.Format("--pid={0} --filename={1} --arguments={2}", Process.GetCurrentProcess().Id, assembly.Location, commandlineSwitches))
                .WaitForInputIdle();
            System.Windows.Application.Current.Shutdown();
        }
    }
}

Program.cs

using System.Diagnostics;

namespace Shimmer.Client.RestartApplication
{
    class Program
    {
        static void Main(string[] args)
        {
            if (args == null || args.Length != 3) return;

            var targetPid = int.Parse(GetValue("--pid=", args[0]));
            if (!Process.GetProcessById(targetPid).WaitForExit(15 * 1000)) {
                return;
            }

            Process.Start(new ProcessStartInfo
            {
                FileName = GetValue("--filename=", args[1]),
                Arguments = GetValue("--arguments=", args[2]),
                WindowStyle = ProcessWindowStyle.Hidden
            });
        }

        private static string GetValue(string argument, string segment)
        {
            return segment.Length > argument.Length ? segment.Substring(argument.Length) : string.Empty;
        }

    }

    public abstract class AssemblyRef {}
}