diff --git a/M2Mqtt/M2Mqtt.csproj b/M2Mqtt/M2Mqtt.csproj
index 24464d3..83a5a21 100644
--- a/M2Mqtt/M2Mqtt.csproj
+++ b/M2Mqtt/M2Mqtt.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -10,7 +10,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>uPLibrary.Networking.M2Mqtt</RootNamespace>
     <AssemblyName>M2Mqtt</AssemblyName>
-    <TargetFrameworkVersion>v2.0</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.7.1</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <TargetFrameworkProfile />
   </PropertyGroup>
@@ -18,8 +18,8 @@
     <DebugSymbols>true</DebugSymbols>
     <DebugType>full</DebugType>
     <Optimize>false</Optimize>
-    <OutputPath>bin\Debug\</OutputPath>
-    <DefineConstants>TRACE;DEBUG</DefineConstants>
+    <OutputPath>bin\Debug\4.7.1\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <Prefer32Bit>false</Prefer32Bit>
@@ -27,7 +27,7 @@
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>pdbonly</DebugType>
     <Optimize>true</Optimize>
-    <OutputPath>bin\Release\</OutputPath>
+    <OutputPath>bin\Release\4.7.1\</OutputPath>
     <DefineConstants>TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
diff --git a/M2Mqtt/M2Mqtt_2.csproj b/M2Mqtt/M2Mqtt_2.csproj
new file mode 100644
index 0000000..bc4a1d9
--- /dev/null
+++ b/M2Mqtt/M2Mqtt_2.csproj
@@ -0,0 +1,93 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProductVersion>8.0.30703</ProductVersion>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{A11AEF5A-B246-4FE8-8330-06DB73CC8074}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>uPLibrary.Networking.M2Mqtt</RootNamespace>
+    <AssemblyName>M2Mqtt</AssemblyName>
+    <TargetFrameworkVersion>v2.0</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <TargetFrameworkProfile />
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\2.0\</OutputPath>
+    <DefineConstants>TRACE;DEBUG</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <Prefer32Bit>false</Prefer32Bit>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\2.0\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <Prefer32Bit>false</Prefer32Bit>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Exceptions\MqttClientException.cs" />
+    <Compile Include="Exceptions\MqttCommunicationException.cs" />
+    <Compile Include="Exceptions\MqttConnectionException.cs" />
+    <Compile Include="Exceptions\MqttTimeoutException.cs" />
+    <Compile Include="IMqttNetworkChannel.cs" />
+    <Compile Include="Internal\InternalEvent.cs" />
+    <Compile Include="Internal\MsgInternalEvent.cs" />
+    <Compile Include="Internal\MsgPublishedInternalEvent.cs" />
+    <Compile Include="Messages\MqttMsgBase.cs" />
+    <Compile Include="Messages\MqttMsgConnack.cs" />
+    <Compile Include="Messages\MqttMsgConnect.cs" />
+    <Compile Include="Messages\MqttMsgConnectEventArgs.cs" />
+    <Compile Include="Messages\MqttMsgContext.cs" />
+    <Compile Include="Messages\MqttMsgDisconnect.cs" />
+    <Compile Include="Messages\MqttMsgPingReq.cs" />
+    <Compile Include="Messages\MqttMsgPingResp.cs" />
+    <Compile Include="Messages\MqttMsgPuback.cs" />
+    <Compile Include="Messages\MqttMsgPubcomp.cs" />
+    <Compile Include="Messages\MqttMsgPublish.cs" />
+    <Compile Include="Messages\MqttMsgPublishedEventArgs.cs" />
+    <Compile Include="Messages\MqttMsgPublishEventArgs.cs" />
+    <Compile Include="Messages\MqttMsgPubrec.cs" />
+    <Compile Include="Messages\MqttMsgPubrel.cs" />
+    <Compile Include="Messages\MqttMsgSuback.cs" />
+    <Compile Include="Messages\MqttMsgSubscribe.cs" />
+    <Compile Include="Messages\MqttMsgSubscribedEventArgs.cs" />
+    <Compile Include="Messages\MqttMsgSubscribeEventArgs.cs" />
+    <Compile Include="Messages\MqttMsgUnsuback.cs" />
+    <Compile Include="Messages\MqttMsgUnsubscribe.cs" />
+    <Compile Include="Messages\MqttMsgUnsubscribedEventArgs.cs" />
+    <Compile Include="Messages\MqttMsgUnsubscribeEventArgs.cs" />
+    <Compile Include="MqttClient.cs" />
+    <Compile Include="MqttSecurity.cs" />
+    <Compile Include="Net\Fx.cs" />
+    <Compile Include="Net\MqttNetworkChannel.cs" />
+    <Compile Include="MqttSettings.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="Session\MqttBrokerSession.cs" />
+    <Compile Include="Session\MqttClientSession.cs" />
+    <Compile Include="Session\MqttSession.cs" />
+    <Compile Include="Utility\Trace.cs" />
+    <Compile Include="Utility\QueueExtension.cs" />
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>
\ No newline at end of file
diff --git a/M2Mqtt/bin/Release/4.7.1/M2Mqtt.dll b/M2Mqtt/bin/Release/4.7.1/M2Mqtt.dll
new file mode 100644
index 0000000..dcbbb88
Binary files /dev/null and b/M2Mqtt/bin/Release/4.7.1/M2Mqtt.dll differ
diff --git a/M2Mqtt_2.sln b/M2Mqtt_2.sln
new file mode 100644
index 0000000..aa2f81e
--- /dev/null
+++ b/M2Mqtt_2.sln
@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.27004.2010
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "M2Mqtt_2", "M2Mqtt\M2Mqtt_2.csproj", "{A11AEF5A-B246-4FE8-8330-06DB73CC8074}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{A11AEF5A-B246-4FE8-8330-06DB73CC8074}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{A11AEF5A-B246-4FE8-8330-06DB73CC8074}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{A11AEF5A-B246-4FE8-8330-06DB73CC8074}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{A11AEF5A-B246-4FE8-8330-06DB73CC8074}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {135814CF-A469-4436-9C51-3CFE4B93D2FE}
+	EndGlobalSection
+EndGlobal