diff --git a/installer/win/WixSharpInstaller/CloseDialog.cs b/installer/win/WixSharpInstaller/CloseDialog.cs
index ae02d8a7..7ca5b569 100644
--- a/installer/win/WixSharpInstaller/CloseDialog.cs
+++ b/installer/win/WixSharpInstaller/CloseDialog.cs
@@ -13,7 +13,7 @@ namespace Symphony
         void dialog_Load(object sender, System.EventArgs e)
         {
             // Detect if Symphony is running
-            bool isRunning = (System.Diagnostics.Process.GetProcessesByName("Symphony").Length > 1 || System.Diagnostics.Process.GetProcessesByName("C9Shell").Length >= 1);
+            bool isRunning = System.Diagnostics.Process.GetProcessesByName("Symphony").Length > 1;
             if (isRunning)
             {
                 // If it is running, disable the "next" button
diff --git a/installer/win/WixSharpInstaller/MaintenanceDialog.cs b/installer/win/WixSharpInstaller/MaintenanceDialog.cs
index d202ae4d..1e4baa05 100644
--- a/installer/win/WixSharpInstaller/MaintenanceDialog.cs
+++ b/installer/win/WixSharpInstaller/MaintenanceDialog.cs
@@ -12,7 +12,7 @@ namespace Symphony
         private void MaintenanceDialog_Shown(object sender, System.EventArgs e)
         {
             // Detect if Symphony is running
-            bool isRunning = (System.Diagnostics.Process.GetProcessesByName("Symphony").Length > 1 || System.Diagnostics.Process.GetProcessesByName("C9Shell").Length >= 1);
+            bool isRunning = System.Diagnostics.Process.GetProcessesByName("Symphony").Length > 1;
             if (isRunning)
             {
                 // If it is running, continue to the "Close Symphony" screen
diff --git a/installer/win/WixSharpInstaller/Symphony.cs b/installer/win/WixSharpInstaller/Symphony.cs
index aca77ecc..63d9f38d 100644
--- a/installer/win/WixSharpInstaller/Symphony.cs
+++ b/installer/win/WixSharpInstaller/Symphony.cs
@@ -110,7 +110,6 @@ class Script
             // instruct the installer to not send a Close message, but instead send the EndSession message, and we have a custom event
             // handler in the SDA code which listens for this message, and ensures app termination when it is received.
             new CloseApplication("Symphony.exe", false) { EndSessionMessage = true },
-            new CloseApplication("C9Shell.exe", false) { EndSessionMessage = true }
             );
 
         // The build script which calls the wix# builder, will be run from a command environment which has %SYMVER% set.
@@ -289,19 +288,6 @@ class Script
                         }
                     }
                 });
-
-                // The embedded C9 Shell should terminate when the parent window is closed, but it doesn't always work. So we'll just force it to exit
-                System.Diagnostics.Process.GetProcessesByName("C9Shell").ForEach(p =>
-                {
-                    if (System.IO.Path.GetFileName(p.MainModule.FileName) == "C9Shell.exe")
-                    {
-                        if (!p.HasExited)
-                        {
-                            p.Kill();
-                            p.WaitForExit();
-                        }
-                    }
-                });
             }
         }
         catch (System.ComponentModel.Win32Exception ex)