diff --git a/shadowsocks-csharp/Controller/UpdateChecker.cs b/shadowsocks-csharp/Controller/UpdateChecker.cs
index 8e1b6523..8be0d97f 100755
--- a/shadowsocks-csharp/Controller/UpdateChecker.cs
+++ b/shadowsocks-csharp/Controller/UpdateChecker.cs
@@ -125,29 +125,29 @@ private bool IsNewVersion(string url)
                 return false;
             }
             // check dotnet 4.0
-            AssemblyName[] references = Assembly.GetExecutingAssembly().GetReferencedAssemblies();
-            Version dotNetVersion = Environment.Version;
-            foreach (AssemblyName reference in references)
-            {
-                if (reference.Name == "mscorlib")
-                {
-                    dotNetVersion = reference.Version;
-                }
-            }
-            if (dotNetVersion.Major >= 4)
-            {
-                if (url.IndexOf("dotnet4.0") < 0)
-                {
-                    return false;
-                }
-            }
-            else
-            {
-                if (url.IndexOf("dotnet4.0") >= 0)
-                {
-                    return false;
-                }
-            }
+            //AssemblyName[] references = Assembly.GetExecutingAssembly().GetReferencedAssemblies();
+            //Version dotNetVersion = Environment.Version;
+            //foreach (AssemblyName reference in references)
+            //{
+            //    if (reference.Name == "mscorlib")
+            //    {
+            //        dotNetVersion = reference.Version;
+            //    }
+            //}
+            //if (dotNetVersion.Major >= 4)
+            //{
+            //    if (url.IndexOf("dotnet4.0") < 0)
+            //    {
+            //        return false;
+            //    }
+            //}
+            //else
+            //{
+            //    if (url.IndexOf("dotnet4.0") >= 0)
+            //    {
+            //        return false;
+            //    }
+            //}
             string version = ParseVersionFromURL(url);
             if (version == null)
             {
diff --git a/shadowsocks-csharp/View/MenuViewController.cs b/shadowsocks-csharp/View/MenuViewController.cs
index b6df5b86..d1aaaadd 100755
--- a/shadowsocks-csharp/View/MenuViewController.cs
+++ b/shadowsocks-csharp/View/MenuViewController.cs
@@ -654,7 +654,7 @@ void UpdateItem_Clicked(object sender, EventArgs e)
 
         void notifyIcon1_BalloonTipClicked(object sender, EventArgs e)
         {
-            //System.Diagnostics.Process.Start(updateChecker.LatestVersionURL);
+            System.Diagnostics.Process.Start(updateChecker.LatestVersionURL);
             _notifyIcon.BalloonTipClicked -= notifyIcon1_BalloonTipClicked;
         }