diff --git a/Flow.Launcher/Images/Error.png b/Flow.Launcher/Images/Error.png
new file mode 100644
index 000000000..4bdcd80f9
Binary files /dev/null and b/Flow.Launcher/Images/Error.png differ
diff --git a/Flow.Launcher/Images/Exclamation.png b/Flow.Launcher/Images/Exclamation.png
new file mode 100644
index 000000000..a9d99362c
Binary files /dev/null and b/Flow.Launcher/Images/Exclamation.png differ
diff --git a/Flow.Launcher/Images/Information.png b/Flow.Launcher/Images/Information.png
new file mode 100644
index 000000000..779e22dc1
Binary files /dev/null and b/Flow.Launcher/Images/Information.png differ
diff --git a/Flow.Launcher/Images/Question.png b/Flow.Launcher/Images/Question.png
new file mode 100644
index 000000000..6ca093f6d
Binary files /dev/null and b/Flow.Launcher/Images/Question.png differ
diff --git a/Flow.Launcher/MessageBoxEx.xaml b/Flow.Launcher/MessageBoxEx.xaml
new file mode 100644
index 000000000..8a155a282
--- /dev/null
+++ b/Flow.Launcher/MessageBoxEx.xaml
@@ -0,0 +1,139 @@
+<Window
+    x:Class="Flow.Launcher.MessageBoxEx"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:local="clr-namespace:Flow.Launcher"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    x:Name="MessageBoxWindow"
+    Width="420"
+    Height="Auto"
+    ResizeMode="NoResize"
+    SizeToContent="Height"
+    WindowStartupLocation="CenterScreen"
+    mc:Ignorable="d">
+    <WindowChrome.WindowChrome>
+        <WindowChrome CaptionHeight="32" ResizeBorderThickness="{x:Static SystemParameters.WindowResizeBorderThickness}" />
+    </WindowChrome.WindowChrome>
+    <Window.InputBindings>
+        <KeyBinding Key="Escape" Command="Close" />
+    </Window.InputBindings>
+    <Window.CommandBindings>
+        <CommandBinding Command="Close" Executed="cmdEsc_OnPress" />
+    </Window.CommandBindings>
+    <Grid>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto" />
+            <RowDefinition />
+            <RowDefinition MinHeight="68" />
+        </Grid.RowDefinitions>
+        <StackPanel Grid.Row="0">
+            <StackPanel>
+                <Grid>
+                    <Grid.ColumnDefinitions>
+                        <ColumnDefinition Width="Auto" />
+                        <ColumnDefinition Width="*" />
+                        <ColumnDefinition Width="Auto" />
+                        <ColumnDefinition Width="Auto" />
+                        <ColumnDefinition Width="Auto" />
+                    </Grid.ColumnDefinitions>
+                    <Button
+                        Grid.Column="4"
+                        Click="Button_Cancel"
+                        Style="{StaticResource TitleBarCloseButtonStyle}">
+                        <Path
+                            Width="46"
+                            Height="32"
+                            Data="M 18,11 27,20 M 18,20 27,11"
+                            Stroke="{Binding Path=Foreground, RelativeSource={RelativeSource AncestorType={x:Type Button}}}"
+                            StrokeThickness="1">
+                            <Path.Style>
+                                <Style TargetType="Path">
+                                    <Style.Triggers>
+                                        <DataTrigger Binding="{Binding Path=IsActive, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window}}}" Value="False">
+                                            <Setter Property="Opacity" Value="0.5" />
+                                        </DataTrigger>
+                                    </Style.Triggers>
+                                </Style>
+                            </Path.Style>
+                        </Path>
+                    </Button>
+                </Grid>
+            </StackPanel>
+        </StackPanel>
+        <StackPanel Grid.Row="1" Margin="0,0,0,24">
+            <Grid Grid.Column="0" Margin="0,0,0,12">
+                <Grid.ColumnDefinitions>
+                    <ColumnDefinition Width="Auto" />
+                    <ColumnDefinition Width="*" />
+                </Grid.ColumnDefinitions>
+                <Image
+                    Name="Img"
+                    Grid.Column="0"
+                    Width="18"
+                    Height="18"
+                    Margin="30,10,0,0"
+                    HorizontalAlignment="Left"
+                    VerticalAlignment="Top"
+                    RenderOptions.BitmapScalingMode="Fant"
+                    Stretch="UniformToFill"
+                    Visibility="Collapsed" />
+                <TextBlock
+                    x:Name="TitleTextBlock"
+                    Grid.Column="1"
+                    MaxWidth="400"
+                    Margin="26,0,26,0"
+                    FontFamily="Segoe UI"
+                    FontSize="20"
+                    FontWeight="SemiBold"
+                    TextAlignment="Left"
+                    TextWrapping="Wrap" />
+            </Grid>
+            <TextBlock
+                x:Name="DescTextBlock"
+                Grid.Column="1"
+                MaxWidth="400"
+                Margin="26,0,26,0"
+                HorizontalAlignment="Stretch"
+                FontSize="14"
+                TextAlignment="Left"
+                TextWrapping="Wrap" />
+        </StackPanel>
+        <Border
+            Grid.Row="2"
+            Margin="0,0,0,0"
+            Background="{DynamicResource PopupButtonAreaBGColor}"
+            BorderBrush="{DynamicResource PopupButtonAreaBorderColor}"
+            BorderThickness="0,1,0,0">
+            <WrapPanel
+                HorizontalAlignment="Center"
+                VerticalAlignment="Center"
+                Orientation="Horizontal">
+                <Button
+                    x:Name="btnCancel"
+                    MinWidth="140"
+                    Margin="5,0,5,0"
+                    Click="Button_Click"
+                    Content="{DynamicResource cancel}" />
+                <Button
+                    x:Name="btnNo"
+                    MinWidth="140"
+                    Margin="5,0,5,0"
+                    Click="Button_Click"
+                    Content="No" />
+                <Button
+                    x:Name="btnOk"
+                    MinWidth="140"
+                    Margin="5,0,5,0"
+                    Click="Button_Click"
+                    Content="OK" />
+                <Button
+                    x:Name="btnYes"
+                    MinWidth="140"
+                    Margin="5,0,5,0"
+                    Click="Button_Click"
+                    Content="Yes" />
+            </WrapPanel>
+        </Border>
+    </Grid>
+</Window>
\ No newline at end of file
diff --git a/Flow.Launcher/MessageBoxEx.xaml.cs b/Flow.Launcher/MessageBoxEx.xaml.cs
new file mode 100644
index 000000000..ea30165d7
--- /dev/null
+++ b/Flow.Launcher/MessageBoxEx.xaml.cs
@@ -0,0 +1,189 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Forms;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Shapes;
+using Flow.Launcher.Core.Resource;
+using Flow.Launcher.Infrastructure;
+using Flow.Launcher.Infrastructure.Image;
+using YamlDotNet.Core.Tokens;
+
+namespace Flow.Launcher
+{
+    public partial class MessageBoxEx : Window
+    {
+        public MessageBoxEx()
+        {
+            InitializeComponent();
+        }
+
+        public enum MessageBoxType
+        {
+            ConfirmationWithYesNo = 0,
+            ConfirmationWithYesNoCancel,
+            Information,
+            Error,
+            Warning
+        }
+
+        public enum MessageBoxImage
+        {
+            Warning = 0,
+            Question,
+            Information,
+            Error,
+            None
+        }
+
+        static MessageBoxEx msgBox;
+        static MessageBoxResult _result = MessageBoxResult.No;
+
+
+        /// 1 parameter
+        public static MessageBoxResult Show(string msg)
+        {
+            return Show(string.Empty, msg, MessageBoxButton.OK, MessageBoxImage.None);
+        }
+
+        // 2 parameter
+        public static MessageBoxResult Show(string caption, string text)
+        {
+            return Show(caption, text, MessageBoxButton.OK, MessageBoxImage.None);
+        }
+
+        /// 3 parameter
+        public static MessageBoxResult Show(string caption, string msg, MessageBoxType type) 
+        {
+            switch (type)
+            {
+                case MessageBoxType.ConfirmationWithYesNo:
+                    return Show(caption, msg, MessageBoxButton.YesNo,
+                    MessageBoxImage.Question);
+                case MessageBoxType.ConfirmationWithYesNoCancel:
+                    return Show(caption, msg, MessageBoxButton.YesNoCancel,
+                    MessageBoxImage.Question);
+                case MessageBoxType.Information:
+                    return Show(caption, msg, MessageBoxButton.OK,
+                    MessageBoxImage.Information);
+                case MessageBoxType.Error:
+                    return Show(caption, msg, MessageBoxButton.OK,
+                    MessageBoxImage.Error);
+                case MessageBoxType.Warning:
+                    return Show(caption, msg, MessageBoxButton.OK,
+                    MessageBoxImage.Warning);
+                default:
+                    return MessageBoxResult.No;
+            }
+        }
+
+        // 4 parameter, Final Display Message. 
+        public static MessageBoxResult Show(string caption, string text, MessageBoxButton button, MessageBoxImage image)
+        {
+            msgBox = new MessageBoxEx();
+            msgBox.TitleTextBlock.Text = text;
+            msgBox.DescTextBlock.Text = caption;
+            msgBox.Title = text;
+            SetVisibilityOfButtons(button);
+            SetImageOfMessageBox(image);
+            msgBox.ShowDialog();
+            return _result;
+        }
+        private void Button_Click(object sender, RoutedEventArgs e)
+        {
+            if (sender == btnOk)
+                _result = MessageBoxResult.OK;
+            else if (sender == btnYes)
+                _result = MessageBoxResult.Yes;
+            else if (sender == btnNo)
+                _result = MessageBoxResult.No;
+            else if (sender == btnCancel)
+                _result = MessageBoxResult.Cancel;
+            else
+                _result = MessageBoxResult.None;
+            msgBox.Close();
+            msgBox = null;
+        }
+
+        private static void SetVisibilityOfButtons(MessageBoxButton button)
+        {
+            switch (button)
+            {
+                case MessageBoxButton.OK:
+                    msgBox.btnCancel.Visibility = Visibility.Collapsed;
+                    msgBox.btnNo.Visibility = Visibility.Collapsed;
+                    msgBox.btnYes.Visibility = Visibility.Collapsed;
+                    msgBox.btnOk.Focus();
+                    break;
+                case MessageBoxButton.OKCancel:
+                    msgBox.btnNo.Visibility = Visibility.Collapsed;
+                    msgBox.btnYes.Visibility = Visibility.Collapsed;
+                    msgBox.btnCancel.Focus();
+                    break;
+                case MessageBoxButton.YesNo:
+                    msgBox.btnOk.Visibility = Visibility.Collapsed;
+                    msgBox.btnCancel.Visibility = Visibility.Collapsed;
+                    msgBox.btnNo.Focus();
+                    break;
+                case MessageBoxButton.YesNoCancel:
+                    msgBox.btnOk.Visibility = Visibility.Collapsed;
+                    msgBox.btnCancel.Focus();
+                    break;
+                default:
+                    break;
+            }
+        }
+        private static void SetImageOfMessageBox(MessageBoxImage image)
+        {
+            switch (image)
+            {
+                case MessageBoxImage.Warning:
+                    msgBox.SetImage("Warning.png");
+                    msgBox.Img.Visibility = Visibility.Visible;
+                    break;
+                case MessageBoxImage.Question:
+                    msgBox.SetImage("Question.png");
+                    msgBox.Img.Visibility = Visibility.Visible;
+                    break;
+                case MessageBoxImage.Information:
+                    msgBox.SetImage("Information.png");
+                    msgBox.Img.Visibility = Visibility.Visible;
+                    break;
+                case MessageBoxImage.Error:
+                    msgBox.SetImage("Error.png");
+                    msgBox.Img.Visibility = Visibility.Visible;
+                    break;
+                default:
+                    msgBox.Img.Visibility = Visibility.Collapsed;
+                    break;
+            }
+        }
+        private void SetImage(string imageName)
+        {
+            //string uri = string.Format("/Resources/Images/{0}", imageName);
+            string uri = Constant.ProgramDirectory + "/Images/" + imageName;
+            var uriSource = new Uri(uri, UriKind.RelativeOrAbsolute);
+            Img.Source = new BitmapImage(uriSource);
+        }
+        private void cmdEsc_OnPress(object sender, ExecutedRoutedEventArgs e)
+        {
+            DialogResult = false;
+            Close();
+        }
+
+        private void Button_Cancel(object sender, RoutedEventArgs e)
+        {
+            msgBox.Close();
+            msgBox = null;
+        }
+
+    }
+}