diff --git a/src/Directory.Build.props b/src/Directory.Build.props
index 1b33b4c..cb75183 100644
--- a/src/Directory.Build.props
+++ b/src/Directory.Build.props
@@ -1,13 +1,17 @@
 <Project>
   <PropertyGroup>
+    <TargetFrameworks>net45;net462;net472;netcoreapp3.1;net5.0-windows</TargetFrameworks>
     <LangVersion>latest</LangVersion>
     <UseWindowsForms>true</UseWindowsForms>
 	  <UseWPF>true</UseWPF>
     <AppendTargetFrameworkToOutputPath>true</AppendTargetFrameworkToOutputPath>
     <IsSampleProject>$(MSBuildProjectName.Contains('Sample'))</IsSampleProject>
+    <DebugSymbols>True</DebugSymbols>
+    <DebugType>embedded</DebugType>
+    
     <Copyright>Copyright (c) 2009-2020 Philipp Sumi</Copyright>
     <Company>hardcodet.net</Company>
-    <Authors>Philipp Sumi</Authors>
+    <Authors>Philipp Sumi, Robin Krom, Jan Karger</Authors>
     <PackageIcon>icon.png</PackageIcon>
     <RepositoryUrl>https://github.com/hardcodet/wpf-notifyicon</RepositoryUrl>
     <RepositoryType>git</RepositoryType>
@@ -18,7 +22,6 @@
 
 Source code and extensive sample application available at http://www.hardcodet.net/projects/wpf-notifyicon</Description>
     <Summary>NotifyIcon (aka system tray icon or taskbar icon) for the WPF platform.</Summary>
-    <language />
     <tags>NotifyIcon WPF Tray Notify ToolTip Popup Balloon Toast</tags>
   </PropertyGroup>
 
@@ -27,17 +30,7 @@ Source code and extensive sample application available at http://www.hardcodet.n
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)' == 'Debug'">
-    <DefineConstants>DEBUG;TRACE</DefineConstants>
-    <DebugSymbols>True</DebugSymbols>
     <CheckForOverflowUnderflow>true</CheckForOverflowUnderflow>
-    <DebugType>embedded</DebugType>
-    <Optimize>false</Optimize>
-  </PropertyGroup>
-
-  <PropertyGroup Condition="'$(Configuration)' == 'Release'">
-    <Optimize>true</Optimize>
-    <DebugType>embedded</DebugType>
-    <DebugSymbols>True</DebugSymbols>
   </PropertyGroup>
 
   <ItemGroup>
@@ -55,10 +48,11 @@ Source code and extensive sample application available at http://www.hardcodet.n
         <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
       </PropertyGroup>
 
-      <PropertyGroup Condition="$(TargetFramework.StartsWith('net4'))">
+      <PropertyGroup>
         <SignAssembly>true</SignAssembly>
         <AssemblyOriginatorKeyFile>..\NotifyIconWpf.snk</AssemblyOriginatorKeyFile>
         <DelaySign>false</DelaySign>
+        <PublicSign Condition=" '$(OS)' != 'Windows_NT' ">true</PublicSign>
       </PropertyGroup>
 
       <ItemGroup>
diff --git a/src/NotifyIconWpf.Sample.ShowCases/NotifyIconWpf.Sample.ShowCases.csproj b/src/NotifyIconWpf.Sample.ShowCases/NotifyIconWpf.Sample.ShowCases.csproj
index 080a032..77aa039 100644
--- a/src/NotifyIconWpf.Sample.ShowCases/NotifyIconWpf.Sample.ShowCases.csproj
+++ b/src/NotifyIconWpf.Sample.ShowCases/NotifyIconWpf.Sample.ShowCases.csproj
@@ -1,26 +1,18 @@
 <Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
   <PropertyGroup>
     <OutputType>WinExe</OutputType>
-    <TargetFrameworks>net472;netcoreapp3.1;net5.0-windows</TargetFrameworks>
-    <GenerateResourceUsePreserializedResources>true</GenerateResourceUsePreserializedResources>
-	<ApplicationManifest>app.manifest</ApplicationManifest>
+    <ApplicationManifest>app.manifest</ApplicationManifest>
+    <GenerateResourceUsePreserializedResources Condition="'$(TargetFramework)' != 'net45'">true</GenerateResourceUsePreserializedResources>
   </PropertyGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\NotifyIconWpf\NotifyIconWpf.csproj" />
   </ItemGroup>
-  <ItemGroup Condition="'$(TargetFramework)' != 'net45'">
-    <PackageReference Include="System.Resources.Extensions" Version="5.0.0" PrivateAssets="All"/>
-  </ItemGroup>
 
-  <ItemGroup Condition="$(TargetFramework.StartsWith('net4'))">
-    <Reference Include="PresentationFramework.Aero" />
-    <Reference Include="System.Xaml" />
-    <Reference Include="System.Data.DataSetExtensions" />
-    <Reference Include="UIAutomationProvider" />
-    <Reference Include="WindowsBase" />
-    <Reference Include="PresentationCore" />
-    <Reference Include="PresentationFramework" />
+  <ItemGroup Condition="'$(TargetFramework)' != 'net45'">
+    <PackageReference Include="System.Resources.Extensions" Version="5.0.0" PrivateAssets="All" />
   </ItemGroup>
+  
   <ItemGroup>
     <Compile DependentUpon="%(Filename)" SubType="Code" Update="**\obj\**\*.g$(DefaultLanguageSourceExtension)" />
     <Compile DependentUpon="%(Filename)" SubType="Designer" Update="**\*.xaml$(DefaultLanguageSourceExtension)" />
diff --git a/src/NotifyIconWpf.Sample.ShowCases/Properties/Resources.Designer.cs b/src/NotifyIconWpf.Sample.ShowCases/Properties/Resources.Designer.cs
deleted file mode 100644
index a678323..0000000
--- a/src/NotifyIconWpf.Sample.ShowCases/Properties/Resources.Designer.cs
+++ /dev/null
@@ -1,93 +0,0 @@
-//------------------------------------------------------------------------------
-// <auto-generated>
-//     This code was generated by a tool.
-//     Runtime Version:4.0.30319.18408
-//
-//     Changes to this file may cause incorrect behavior and will be lost if
-//     the code is regenerated.
-// </auto-generated>
-//------------------------------------------------------------------------------
-
-namespace Samples.Properties {
-    using System;
-    
-    
-    /// <summary>
-    ///   A strongly-typed resource class, for looking up localized strings, etc.
-    /// </summary>
-    // This class was auto-generated by the StronglyTypedResourceBuilder
-    // class via a tool like ResGen or Visual Studio.
-    // To add or remove a member, edit your .ResX file then rerun ResGen
-    // with the /str option, or rebuild your VS project.
-    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "4.0.0.0")]
-    [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
-    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
-    internal class Resources {
-        
-        private static global::System.Resources.ResourceManager resourceMan;
-        
-        private static global::System.Globalization.CultureInfo resourceCulture;
-        
-        [global::System.Diagnostics.CodeAnalysis.SuppressMessageAttribute("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
-        internal Resources() {
-        }
-        
-        /// <summary>
-        ///   Returns the cached ResourceManager instance used by this class.
-        /// </summary>
-        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
-        internal static global::System.Resources.ResourceManager ResourceManager {
-            get {
-                if (object.ReferenceEquals(resourceMan, null)) {
-                    global::System.Resources.ResourceManager temp = new global::System.Resources.ResourceManager("Samples.Properties.Resources", typeof(Resources).Assembly);
-                    resourceMan = temp;
-                }
-                return resourceMan;
-            }
-        }
-        
-        /// <summary>
-        ///   Overrides the current thread's CurrentUICulture property for all
-        ///   resource lookups using this strongly typed resource class.
-        /// </summary>
-        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
-        internal static global::System.Globalization.CultureInfo Culture {
-            get {
-                return resourceCulture;
-            }
-            set {
-                resourceCulture = value;
-            }
-        }
-        
-        /// <summary>
-        ///   Looks up a localized resource of type System.Drawing.Icon similar to (Icon).
-        /// </summary>
-        internal static System.Drawing.Icon Bulb {
-            get {
-                object obj = ResourceManager.GetObject("Bulb", resourceCulture);
-                return ((System.Drawing.Icon)(obj));
-            }
-        }
-        
-        /// <summary>
-        ///   Looks up a localized resource of type System.Drawing.Icon similar to (Icon).
-        /// </summary>
-        internal static System.Drawing.Icon Computers {
-            get {
-                object obj = ResourceManager.GetObject("Computers", resourceCulture);
-                return ((System.Drawing.Icon)(obj));
-            }
-        }
-        
-        /// <summary>
-        ///   Looks up a localized resource of type System.Drawing.Icon similar to (Icon).
-        /// </summary>
-        internal static System.Drawing.Icon NetDrives {
-            get {
-                object obj = ResourceManager.GetObject("NetDrives", resourceCulture);
-                return ((System.Drawing.Icon)(obj));
-            }
-        }
-    }
-}
diff --git a/src/NotifyIconWpf.Sample.ShowCases/Properties/Resources.resx b/src/NotifyIconWpf.Sample.ShowCases/Properties/Resources.resx
deleted file mode 100644
index 614a82e..0000000
--- a/src/NotifyIconWpf.Sample.ShowCases/Properties/Resources.resx
+++ /dev/null
@@ -1,130 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
-  <!-- 
-    Microsoft ResX Schema 
-    
-    Version 2.0
-    
-    The primary goals of this format is to allow a simple XML format 
-    that is mostly human readable. The generation and parsing of the 
-    various data types are done through the TypeConverter classes 
-    associated with the data types.
-    
-    Example:
-    
-    ... ado.net/XML headers & schema ...
-    <resheader name="resmimetype">text/microsoft-resx</resheader>
-    <resheader name="version">2.0</resheader>
-    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
-    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
-    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
-    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
-    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
-        <value>[base64 mime encoded serialized .NET Framework object]</value>
-    </data>
-    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
-        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
-        <comment>This is a comment</comment>
-    </data>
-                
-    There are any number of "resheader" rows that contain simple 
-    name/value pairs.
-    
-    Each data row contains a name, and value. The row also contains a 
-    type or mimetype. Type corresponds to a .NET class that support 
-    text/value conversion through the TypeConverter architecture. 
-    Classes that don't support this are serialized and stored with the 
-    mimetype set.
-    
-    The mimetype is used for serialized objects, and tells the 
-    ResXResourceReader how to depersist the object. This is currently not 
-    extensible. For a given mimetype the value must be set accordingly:
-    
-    Note - application/x-microsoft.net.object.binary.base64 is the format 
-    that the ResXResourceWriter will generate, however the reader can 
-    read any of the formats listed below.
-    
-    mimetype: application/x-microsoft.net.object.binary.base64
-    value   : The object must be serialized with 
-            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
-            : and then encoded with base64 encoding.
-    
-    mimetype: application/x-microsoft.net.object.soap.base64
-    value   : The object must be serialized with 
-            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
-            : and then encoded with base64 encoding.
-
-    mimetype: application/x-microsoft.net.object.bytearray.base64
-    value   : The object must be serialized into a byte array 
-            : using a System.ComponentModel.TypeConverter
-            : and then encoded with base64 encoding.
-    -->
-  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
-    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
-    <xsd:element name="root" msdata:IsDataSet="true">
-      <xsd:complexType>
-        <xsd:choice maxOccurs="unbounded">
-          <xsd:element name="metadata">
-            <xsd:complexType>
-              <xsd:sequence>
-                <xsd:element name="value" type="xsd:string" minOccurs="0" />
-              </xsd:sequence>
-              <xsd:attribute name="name" use="required" type="xsd:string" />
-              <xsd:attribute name="type" type="xsd:string" />
-              <xsd:attribute name="mimetype" type="xsd:string" />
-              <xsd:attribute ref="xml:space" />
-            </xsd:complexType>
-          </xsd:element>
-          <xsd:element name="assembly">
-            <xsd:complexType>
-              <xsd:attribute name="alias" type="xsd:string" />
-              <xsd:attribute name="name" type="xsd:string" />
-            </xsd:complexType>
-          </xsd:element>
-          <xsd:element name="data">
-            <xsd:complexType>
-              <xsd:sequence>
-                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
-                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
-              </xsd:sequence>
-              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
-              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
-              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
-              <xsd:attribute ref="xml:space" />
-            </xsd:complexType>
-          </xsd:element>
-          <xsd:element name="resheader">
-            <xsd:complexType>
-              <xsd:sequence>
-                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
-              </xsd:sequence>
-              <xsd:attribute name="name" type="xsd:string" use="required" />
-            </xsd:complexType>
-          </xsd:element>
-        </xsd:choice>
-      </xsd:complexType>
-    </xsd:element>
-  </xsd:schema>
-  <resheader name="resmimetype">
-    <value>text/microsoft-resx</value>
-  </resheader>
-  <resheader name="version">
-    <value>2.0</value>
-  </resheader>
-  <resheader name="reader">
-    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
-  </resheader>
-  <resheader name="writer">
-    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
-  </resheader>
-  <assembly alias="System.Windows.Forms" name="System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
-  <data name="Bulb" type="System.Resources.ResXFileRef, System.Windows.Forms">
-    <value>..\icons\bulb.ico;System.Drawing.Icon, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
-  </data>
-  <data name="Computers" type="System.Resources.ResXFileRef, System.Windows.Forms">
-    <value>..\icons\computers.ico;System.Drawing.Icon, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
-  </data>
-  <data name="NetDrives" type="System.Resources.ResXFileRef, System.Windows.Forms">
-    <value>..\icons\netdrives.ico;System.Drawing.Icon, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
-  </data>
-</root>
\ No newline at end of file
diff --git a/src/NotifyIconWpf.Sample.ShowCases/Properties/Settings.Designer.cs b/src/NotifyIconWpf.Sample.ShowCases/Properties/Settings.Designer.cs
deleted file mode 100644
index 5df9eba..0000000
--- a/src/NotifyIconWpf.Sample.ShowCases/Properties/Settings.Designer.cs
+++ /dev/null
@@ -1,26 +0,0 @@
-//------------------------------------------------------------------------------
-// <auto-generated>
-//     This code was generated by a tool.
-//     Runtime Version:4.0.30319.18408
-//
-//     Changes to this file may cause incorrect behavior and will be lost if
-//     the code is regenerated.
-// </auto-generated>
-//------------------------------------------------------------------------------
-
-namespace Samples.Properties {
-    
-    
-    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
-    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "12.0.0.0")]
-    internal sealed partial class Settings : global::System.Configuration.ApplicationSettingsBase {
-        
-        private static Settings defaultInstance = ((Settings)(global::System.Configuration.ApplicationSettingsBase.Synchronized(new Settings())));
-        
-        public static Settings Default {
-            get {
-                return defaultInstance;
-            }
-        }
-    }
-}
diff --git a/src/NotifyIconWpf.Sample.ShowCases/Properties/Settings.settings b/src/NotifyIconWpf.Sample.ShowCases/Properties/Settings.settings
deleted file mode 100644
index c14891b..0000000
--- a/src/NotifyIconWpf.Sample.ShowCases/Properties/Settings.settings
+++ /dev/null
@@ -1,8 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-
-<SettingsFile xmlns="uri:settings" CurrentProfile="(Default)">
-  <Profiles>
-    <Profile Name="(Default)" />
-  </Profiles>
-  <Settings />
-</SettingsFile>
\ No newline at end of file
diff --git a/src/NotifyIconWpf.Sample.Windowless/NotifyIconWpf.Sample.Windowless.csproj b/src/NotifyIconWpf.Sample.Windowless/NotifyIconWpf.Sample.Windowless.csproj
index b69fab4..5abdd99 100644
--- a/src/NotifyIconWpf.Sample.Windowless/NotifyIconWpf.Sample.Windowless.csproj
+++ b/src/NotifyIconWpf.Sample.Windowless/NotifyIconWpf.Sample.Windowless.csproj
@@ -1,25 +1,13 @@
 <Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
   <PropertyGroup>
     <OutputType>WinExe</OutputType>
-    <TargetFrameworks>net45;net472;netcoreapp3.1;net5.0-windows</TargetFrameworks>
-    <GenerateResourceUsePreserializedResources>true</GenerateResourceUsePreserializedResources>
-	<ApplicationManifest>app.manifest</ApplicationManifest>
+    <ApplicationManifest>app.manifest</ApplicationManifest>
   </PropertyGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\NotifyIconWpf\NotifyIconWpf.csproj" />
   </ItemGroup>
-  <ItemGroup Condition="'$(TargetFramework)' != 'net45'">
-    <PackageReference Include="System.Resources.Extensions" Version="5.0.0" PrivateAssets="All"/>
-  </ItemGroup>
 
-  <ItemGroup Condition="$(TargetFramework.StartsWith('net4'))">
-    <Reference Include="Microsoft.CSharp" />
-    <Reference Include="System.Data.DataSetExtensions" />
-    <Reference Include="System.Xaml" />
-    <Reference Include="WindowsBase" />
-    <Reference Include="PresentationCore" />
-    <Reference Include="PresentationFramework" />
-  </ItemGroup>
   <ItemGroup>
     <Compile DependentUpon="%(Filename)" SubType="Code" Update="**\obj\**\*.g$(DefaultLanguageSourceExtension)" />
     <Compile DependentUpon="%(Filename)" SubType="Designer" Update="**\*.xaml$(DefaultLanguageSourceExtension)" />
diff --git a/src/NotifyIconWpf.Sample.WindowsForms/NotifyIconWpf.Sample.WindowsForms.csproj b/src/NotifyIconWpf.Sample.WindowsForms/NotifyIconWpf.Sample.WindowsForms.csproj
index 5d3c24e..5e5b7e5 100644
--- a/src/NotifyIconWpf.Sample.WindowsForms/NotifyIconWpf.Sample.WindowsForms.csproj
+++ b/src/NotifyIconWpf.Sample.WindowsForms/NotifyIconWpf.Sample.WindowsForms.csproj
@@ -1,26 +1,18 @@
 <Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
   <PropertyGroup>
     <OutputType>WinExe</OutputType>
-    <TargetFrameworks>net472;netcoreapp3.1;net5.0-windows</TargetFrameworks>
-    <GenerateResourceUsePreserializedResources>true</GenerateResourceUsePreserializedResources>
-	<ApplicationManifest>app.manifest</ApplicationManifest>
+    <ApplicationManifest>app.manifest</ApplicationManifest>
+    <GenerateResourceUsePreserializedResources Condition="'$(TargetFramework)' != 'net45'">true</GenerateResourceUsePreserializedResources>
   </PropertyGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\NotifyIconWpf\NotifyIconWpf.csproj" />
   </ItemGroup>
+
   <ItemGroup Condition="'$(TargetFramework)' != 'net45'">
-    <PackageReference Include="System.Resources.Extensions" Version="5.0.0" PrivateAssets="All"/>
-  </ItemGroup>
-  <ItemGroup Condition="$(TargetFramework.StartsWith('net4'))">
-    <Reference Include="PresentationCore" />
-    <Reference Include="PresentationFramework" />
-    <Reference Include="System.Data.DataSetExtensions" />
-    <Reference Include="System.Deployment" />
-    <Reference Include="System.Xaml" />
-    <Reference Include="System.Windows.Forms" />
-    <Reference Include="UIAutomationProvider" />
-    <Reference Include="WindowsBase" />
+    <PackageReference Include="System.Resources.Extensions" Version="5.0.0" PrivateAssets="All" />
   </ItemGroup>
+
   <ItemGroup>
     <Compile Update="Form1.cs">
       <SubType>Form</SubType>
@@ -31,33 +23,24 @@
     <EmbeddedResource Update="Form1.resx">
       <DependentUpon>Form1.cs</DependentUpon>
     </EmbeddedResource>
+
+    <Compile Update="Properties\Resources.Designer.cs">
+      <DesignTime>True</DesignTime>
+      <AutoGen>True</AutoGen>
+      <DependentUpon>Resources.resx</DependentUpon>
+    </Compile>
     <EmbeddedResource Update="Properties\Resources.resx">
       <Generator>ResXFileCodeGenerator</Generator>
       <LastGenOutput>Resources.Designer.cs</LastGenOutput>
-      <SubType>Designer</SubType>
     </EmbeddedResource>
-    <Compile Update="Properties\Resources.Designer.cs">
-      <AutoGen>True</AutoGen>
-      <DependentUpon>Resources.resx</DependentUpon>
-      <DesignTime>True</DesignTime>
-    </Compile>
-    <Compile Update="Properties\Settings.Designer.cs">
-      <AutoGen>True</AutoGen>
-      <DependentUpon>Settings.settings</DependentUpon>
-      <DesignTimeSharedInput>True</DesignTimeSharedInput>
-    </Compile>
   </ItemGroup>
+
   <ItemGroup>
     <Compile DependentUpon="%(Filename)" Update="**\*.xaml.cs" />
   </ItemGroup>
+
   <ItemGroup>
     <Compile DependentUpon="%(Filename)" SubType="Code" Update="**\obj\**\*.g$(DefaultLanguageSourceExtension)" />
     <Compile DependentUpon="%(Filename)" SubType="Designer" Update="**\*.xaml$(DefaultLanguageSourceExtension)" />
   </ItemGroup>
-  <ItemGroup>
-    <None Update="Properties\Settings.settings">
-      <Generator>SettingsSingleFileGenerator</Generator>
-      <LastGenOutput>Settings.Designer.cs</LastGenOutput>
-    </None>
-  </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/src/NotifyIconWpf.Sample.WindowsForms/Properties/Settings.Designer.cs b/src/NotifyIconWpf.Sample.WindowsForms/Properties/Settings.Designer.cs
deleted file mode 100644
index d12cf18..0000000
--- a/src/NotifyIconWpf.Sample.WindowsForms/Properties/Settings.Designer.cs
+++ /dev/null
@@ -1,26 +0,0 @@
-//------------------------------------------------------------------------------
-// <auto-generated>
-//     This code was generated by a tool.
-//     Runtime Version:4.0.30319.42000
-//
-//     Changes to this file may cause incorrect behavior and will be lost if
-//     the code is regenerated.
-// </auto-generated>
-//------------------------------------------------------------------------------
-
-namespace WindowsFormsSample.Properties {
-    
-    
-    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
-    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "16.1.0.0")]
-    internal sealed partial class Settings : global::System.Configuration.ApplicationSettingsBase {
-        
-        private static Settings defaultInstance = ((Settings)(global::System.Configuration.ApplicationSettingsBase.Synchronized(new Settings())));
-        
-        public static Settings Default {
-            get {
-                return defaultInstance;
-            }
-        }
-    }
-}
diff --git a/src/NotifyIconWpf.Sample.WindowsForms/Properties/Settings.settings b/src/NotifyIconWpf.Sample.WindowsForms/Properties/Settings.settings
deleted file mode 100644
index e04fc63..0000000
--- a/src/NotifyIconWpf.Sample.WindowsForms/Properties/Settings.settings
+++ /dev/null
@@ -1,8 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-
-<SettingsFile xmlns="http://schemas.microsoft.com/VisualStudio/2004/01/settings" CurrentProfile="(Default)">
-  <Profiles>
-    <Profile Name="(Default)" />
-  </Profiles>
-  <Settings />
-</SettingsFile>
\ No newline at end of file
diff --git a/src/NotifyIconWpf/NotifyIconWpf.csproj b/src/NotifyIconWpf/NotifyIconWpf.csproj
index ff566da..13b74bd 100644
--- a/src/NotifyIconWpf/NotifyIconWpf.csproj
+++ b/src/NotifyIconWpf/NotifyIconWpf.csproj
@@ -4,18 +4,12 @@
     <AssemblyName>Hardcodet.NotifyIcon.Wpf</AssemblyName>
     <AssemblyTitle>NotifyIcon for WPF</AssemblyTitle>
     <Product>NotifyIcon WPF</Product>
-    <TargetFrameworks>net45;net472;netcoreapp3.1;net5.0-windows</TargetFrameworks>
   </PropertyGroup>
 
-  <ItemGroup Condition="$(TargetFramework.StartsWith('net4'))">
-    <Reference Include="System.Xaml" />
-    <Reference Include="WindowsBase" />
-    <Reference Include="PresentationCore" />
-    <Reference Include="PresentationFramework" />
-  </ItemGroup>
   <ItemGroup>
     <None Include="Diagrams\TaskbarIcon Overview.cd" />
   </ItemGroup>
+
   <ItemGroup>
     <Compile DependentUpon="%(Filename)" SubType="Code" Update="**\obj\**\*.g$(DefaultLanguageSourceExtension)" />
     <Compile DependentUpon="%(Filename)" SubType="Designer" Update="**\*.xaml$(DefaultLanguageSourceExtension)" />