diff --git a/trunk/ProcessHacker/Build/Installer/Process_Hacker_installer.iss b/trunk/ProcessHacker/Build/Installer/Process_Hacker_installer.iss
index f2132fde3..3b953a4ee 100644
--- a/trunk/ProcessHacker/Build/Installer/Process_Hacker_installer.iss
+++ b/trunk/ProcessHacker/Build/Installer/Process_Hacker_installer.iss
@@ -294,12 +294,22 @@ var
   NetFrameWorkInstalled : Boolean;
   Result1 : Boolean;
 begin
-	NetFrameWorkInstalled := RegKeyExists(HKLM,'SOFTWARE\Microsoft\.NETFramework\policy\v2.0');
+	// Create a mutex for the installer and if it's already running then expose a message and stop installation
+	if CheckForMutexes(installer_mutex_name) then begin
+		if not WizardSilent() then
+			MsgBox(ExpandConstant('{cm:msg_SetupIsRunningWarningInstall}'), mbError, MB_OK);
+			Result := False;
+	end
+	else begin
+		CreateMutex(installer_mutex_name);
+	end;
+
+NetFrameWorkInstalled := RegKeyExists(HKLM,'SOFTWARE\Microsoft\.NETFramework\policy\v2.0');
 	if NetFrameWorkInstalled then begin
 		Result := True;
 		end
 		else begin
-			Result1 := MsgBox(ExpandConstant('{cm:msg_asknetdown}'), mbError, MB_YESNO or MB_DEFBUTTON1) = IDYES;
+			Result1 := MsgBox(ExpandConstant('{cm:msg_asknetdown}'), mbCriticalError, MB_YESNO or MB_DEFBUTTON1) = IDYES;
 			if Result1 =False then begin
 			Result:=False;
 		end
@@ -307,19 +317,6 @@ begin
 			Result:=False;
 		ShellExec('open', 'http://download.microsoft.com/download/5/6/7/567758a3-759e-473e-bf8f-52154438565a/dotnetfx.exe',
 		'','',SW_SHOWNORMAL,ewNoWait,ErrorCode);
-	end;
-end;
-
-begin
-	// Create a mutex for the installer and if it's already running then expose a message and stop installation
-	Result := True;
-	if CheckForMutexes(installer_mutex_name) then begin
-		if not WizardSilent() then
-			MsgBox(ExpandConstant('{cm:msg_SetupIsRunningWarningInstall}'), mbError, MB_OK);
-			Result := False;
-		end
-		else begin
-			CreateMutex(installer_mutex_name);
 		end;
 	end;
 end;