diff --git a/Plugins/HelloWorldCSharp/App.config b/Plugins/HelloWorldCSharp/App.config
deleted file mode 100644
index 8d234373a..000000000
--- a/Plugins/HelloWorldCSharp/App.config
+++ /dev/null
@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<configuration>
-    <startup> 
-        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.2"/>
-    </startup>
-</configuration>
diff --git a/Plugins/HelloWorldCSharp/HelloWorldCSharp.csproj b/Plugins/HelloWorldCSharp/HelloWorldCSharp.csproj
index 143052a03..827c74170 100644
--- a/Plugins/HelloWorldCSharp/HelloWorldCSharp.csproj
+++ b/Plugins/HelloWorldCSharp/HelloWorldCSharp.csproj
@@ -11,7 +11,6 @@
     <AssemblyName>HelloWorldCSharp</AssemblyName>
     <TargetFrameworkVersion>v4.6.2</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
-    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
     <TargetFrameworkProfile />
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
@@ -53,7 +52,6 @@
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
   <ItemGroup>
-    <None Include="App.config" />
     <None Include="plugin.json">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </None>
diff --git a/Wox.Plugin/IPublicAPI.cs b/Wox.Plugin/IPublicAPI.cs
index 754b76d36..3c5b34277 100644
--- a/Wox.Plugin/IPublicAPI.cs
+++ b/Wox.Plugin/IPublicAPI.cs
@@ -81,7 +81,16 @@ public interface IPublicAPI
         /// <param name="title">Message title</param>
         /// <param name="subTitle">Message subtitle</param>
         /// <param name="iconPath">Message icon path (relative path to your plugin folder)</param>
-        void ShowMsg(string title, string subTitle = "", string iconPath = "", bool useMainWindowAsOwner = true);
+        void ShowMsg(string title, string subTitle = "", string iconPath = "");
+
+        /// <summary>
+        /// Show message box
+        /// </summary>
+        /// <param name="title">Message title</param>
+        /// <param name="subTitle">Message subtitle</param>
+        /// <param name="iconPath">Message icon path (relative path to your plugin folder)</param>
+        /// <param name="useMainWindowAsOwner">when true will use main windows as the owner</param>
+        void ShowMsg(string title, string subTitle, string iconPath, bool useMainWindowAsOwner = true);
 
         /// <summary>
         /// Open setting dialog
diff --git a/Wox.sln b/Wox.sln
index cbceab9b8..a8a42ae8d 100644
--- a/Wox.sln
+++ b/Wox.sln
@@ -1,7 +1,7 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 15
-VisualStudioVersion = 15.0.28307.271
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.29806.167
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Wox.Test", "Wox.Test\Wox.Test.csproj", "{FF742965-9A80-41A5-B042-D6C7D3A21708}"
 	ProjectSection(ProjectDependencies) = postProject
diff --git a/Wox/PublicAPIInstance.cs b/Wox/PublicAPIInstance.cs
index 58915f87b..6c17be5c5 100644
--- a/Wox/PublicAPIInstance.cs
+++ b/Wox/PublicAPIInstance.cs
@@ -97,7 +97,12 @@ public void ShowApp()
             _mainVM.MainWindowVisibility = Visibility.Visible;
         }
 
-        public void ShowMsg(string title, string subTitle = "", string iconPath = "", bool useMainWindowAsOwner = true)
+        public void ShowMsg(string title, string subTitle = "", string iconPath = "")
+        {
+            ShowMsg(title, subTitle, iconPath, true);
+        }
+
+        public void ShowMsg(string title, string subTitle, string iconPath, bool useMainWindowAsOwner = true)
         {
             Application.Current.Dispatcher.Invoke(() =>
             {