diff --git a/TestApps/Gtk3Test/Gtk3Test.csproj b/TestApps/Gtk3Test/Gtk3Test.csproj
index 243c6390a..e125c7b16 100644
--- a/TestApps/Gtk3Test/Gtk3Test.csproj
+++ b/TestApps/Gtk3Test/Gtk3Test.csproj
@@ -7,6 +7,7 @@
     <OutputType>Exe</OutputType>
     <RootNamespace>Gtk3Test</RootNamespace>
     <AssemblyName>Gtk3Test</AssemblyName>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>True</DebugSymbols>
diff --git a/TestApps/GtkOnMacTest/GtkOnMacTest.csproj b/TestApps/GtkOnMacTest/GtkOnMacTest.csproj
index c700e379e..cab1af6e6 100644
--- a/TestApps/GtkOnMacTest/GtkOnMacTest.csproj
+++ b/TestApps/GtkOnMacTest/GtkOnMacTest.csproj
@@ -7,6 +7,7 @@
     <OutputType>WinExe</OutputType>
     <RootNamespace>GtkOnMacTest</RootNamespace>
     <AssemblyName>GtkOnMacTest</AssemblyName>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
diff --git a/TestApps/GtkOnWindowsTest/GtkOnWindowsTest.csproj b/TestApps/GtkOnWindowsTest/GtkOnWindowsTest.csproj
index 359c80d86..609c092e0 100644
--- a/TestApps/GtkOnWindowsTest/GtkOnWindowsTest.csproj
+++ b/TestApps/GtkOnWindowsTest/GtkOnWindowsTest.csproj
@@ -7,6 +7,7 @@
     <OutputType>WinExe</OutputType>
     <RootNamespace>GtkOnWindowsTest</RootNamespace>
     <AssemblyName>GtkOnWindowsTest</AssemblyName>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
     <DebugSymbols>true</DebugSymbols>
diff --git a/TestApps/GtkTest/GtkTest.csproj b/TestApps/GtkTest/GtkTest.csproj
index 679647604..079427234 100644
--- a/TestApps/GtkTest/GtkTest.csproj
+++ b/TestApps/GtkTest/GtkTest.csproj
@@ -7,6 +7,7 @@
     <OutputType>Exe</OutputType>
     <RootNamespace>GtkTest</RootNamespace>
     <AssemblyName>GtkTest</AssemblyName>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>True</DebugSymbols>
diff --git a/TestApps/MixedGtkMacTest/MixedGtkMacTest.csproj b/TestApps/MixedGtkMacTest/MixedGtkMacTest.csproj
index 2e699db64..e7710872a 100644
--- a/TestApps/MixedGtkMacTest/MixedGtkMacTest.csproj
+++ b/TestApps/MixedGtkMacTest/MixedGtkMacTest.csproj
@@ -7,6 +7,7 @@
     <OutputType>Exe</OutputType>
     <RootNamespace>MixedGtkMacTest</RootNamespace>
     <AssemblyName>MixedGtkMacTest</AssemblyName>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>True</DebugSymbols>
diff --git a/TestApps/Samples/Samples.csproj b/TestApps/Samples/Samples.csproj
index 3bbe0b5a0..ddd63c0bd 100644
--- a/TestApps/Samples/Samples.csproj
+++ b/TestApps/Samples/Samples.csproj
@@ -7,6 +7,7 @@
     <OutputType>Library</OutputType>
     <RootNamespace>Samples</RootNamespace>
     <AssemblyName>Samples</AssemblyName>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>True</DebugSymbols>
diff --git a/TestApps/WpfTest/WpfTest.csproj b/TestApps/WpfTest/WpfTest.csproj
index 1a9d21e4d..202f343bf 100644
--- a/TestApps/WpfTest/WpfTest.csproj
+++ b/TestApps/WpfTest/WpfTest.csproj
@@ -8,8 +8,8 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>WpfTest</RootNamespace>
     <AssemblyName>WpfTest</AssemblyName>
-    <TargetFrameworkProfile>Client</TargetFrameworkProfile>
     <FileAlignment>512</FileAlignment>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|AnyCPU'">
     <DebugSymbols>True</DebugSymbols>
diff --git a/TestApps/XamMacTest/XamMacTest.csproj b/TestApps/XamMacTest/XamMacTest.csproj
index 06a230474..bb86d542f 100644
--- a/TestApps/XamMacTest/XamMacTest.csproj
+++ b/TestApps/XamMacTest/XamMacTest.csproj
@@ -27,6 +27,8 @@
     <UseSGen>False</UseSGen>
     <UseRefCounting>false</UseRefCounting>
     <Profiling>false</Profiling>
+    <HttpClientHandler>HttpClientHandler</HttpClientHandler>
+    <LinkMode>None</LinkMode>
     <AOTMode>None</AOTMode>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
@@ -44,6 +46,8 @@
     <UseRefCounting>false</UseRefCounting>
     <Profiling>false</Profiling>
     <DebugSymbols>true</DebugSymbols>
+    <HttpClientHandler>HttpClientHandler</HttpClientHandler>
+    <LinkMode>None</LinkMode>
     <AOTMode>None</AOTMode>
   </PropertyGroup>
   <ItemGroup>
diff --git a/Testing/GtkTestRunner.csproj b/Testing/GtkTestRunner.csproj
index 92c71bc07..92298c0a3 100644
--- a/Testing/GtkTestRunner.csproj
+++ b/Testing/GtkTestRunner.csproj
@@ -8,6 +8,7 @@
     <RootNamespace>GtkTestRunner</RootNamespace>
     <AssemblyName>GtkTestRunner</AssemblyName>
     <TestRunnerCommand>bin\GtkTestRunner.exe</TestRunnerCommand>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>True</DebugSymbols>
diff --git a/Testing/MacTestRunner.csproj b/Testing/MacTestRunner.csproj
index 6e40b9b94..3721818bd 100644
--- a/Testing/MacTestRunner.csproj
+++ b/Testing/MacTestRunner.csproj
@@ -12,6 +12,7 @@
     <SuppressXamMacMigration>True</SuppressXamMacMigration>
     <SuppressXamMacUpsell>True</SuppressXamMacUpsell>
     <TestRunnerCommand>bin\MacTestRunner.app</TestRunnerCommand>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>True</DebugSymbols>
@@ -29,6 +30,9 @@
     <CreatePackage>False</CreatePackage>
     <UseRefCounting>false</UseRefCounting>
     <Profiling>false</Profiling>
+    <HttpClientHandler>HttpClientHandler</HttpClientHandler>
+    <LinkMode>None</LinkMode>
+    <AOTMode>None</AOTMode>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>pdbonly</DebugType>
@@ -47,6 +51,8 @@
     <UseRefCounting>false</UseRefCounting>
     <Profiling>false</Profiling>
     <DebugSymbols>true</DebugSymbols>
+    <HttpClientHandler>HttpClientHandler</HttpClientHandler>
+    <AOTMode>None</AOTMode>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
diff --git a/Testing/WpfTestRunner.csproj b/Testing/WpfTestRunner.csproj
index 24f6d6e44..77cb0191b 100644
--- a/Testing/WpfTestRunner.csproj
+++ b/Testing/WpfTestRunner.csproj
@@ -8,9 +8,9 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>WpfTestRunner</RootNamespace>
     <AssemblyName>WpfTestRunner</AssemblyName>
-    <TargetFrameworkProfile>Client</TargetFrameworkProfile>
     <FileAlignment>512</FileAlignment>
     <TestRunnerCommand>bin\WpfTestRunner.exe</TestRunnerCommand>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
     <PlatformTarget>x86</PlatformTarget>
diff --git a/Xwt.Gtk.Mac/Xwt.Gtk.Mac.csproj b/Xwt.Gtk.Mac/Xwt.Gtk.Mac.csproj
index a31fd49d5..b2d412e8f 100644
--- a/Xwt.Gtk.Mac/Xwt.Gtk.Mac.csproj
+++ b/Xwt.Gtk.Mac/Xwt.Gtk.Mac.csproj
@@ -11,6 +11,7 @@
     <SchemaVersion>2.0</SchemaVersion>
     <SignAssembly>True</SignAssembly>
     <AssemblyOriginatorKeyFile>..\xwt.snk</AssemblyOriginatorKeyFile>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
diff --git a/Xwt.Gtk.Windows/Xwt.Gtk.Windows.csproj b/Xwt.Gtk.Windows/Xwt.Gtk.Windows.csproj
index 3f3a22469..e5cb3db0c 100644
--- a/Xwt.Gtk.Windows/Xwt.Gtk.Windows.csproj
+++ b/Xwt.Gtk.Windows/Xwt.Gtk.Windows.csproj
@@ -9,6 +9,7 @@
     <AssemblyName>Xwt.Gtk.Windows</AssemblyName>
     <SignAssembly>true</SignAssembly>
     <AssemblyOriginatorKeyFile>..\xwt.snk</AssemblyOriginatorKeyFile>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
diff --git a/Xwt.Gtk/Xwt.Gtk.csproj b/Xwt.Gtk/Xwt.Gtk.csproj
index a4c35f3a1..55c4ebd04 100644
--- a/Xwt.Gtk/Xwt.Gtk.csproj
+++ b/Xwt.Gtk/Xwt.Gtk.csproj
@@ -11,6 +11,7 @@
     <AssemblyOriginatorKeyFile>..\xwt.snk</AssemblyOriginatorKeyFile>
     <ProductVersion>8.0.30703</ProductVersion>
     <SchemaVersion>2.0</SchemaVersion>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>True</DebugSymbols>
diff --git a/Xwt.Gtk/Xwt.Gtk3.csproj b/Xwt.Gtk/Xwt.Gtk3.csproj
index 40fbee79d..a5907f74e 100644
--- a/Xwt.Gtk/Xwt.Gtk3.csproj
+++ b/Xwt.Gtk/Xwt.Gtk3.csproj
@@ -10,6 +10,7 @@
     <SignAssembly>True</SignAssembly>
     <AssemblyOriginatorKeyFile>..\xwt.snk</AssemblyOriginatorKeyFile>
     <NoWarn>0612, 0618</NoWarn>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>True</DebugSymbols>
diff --git a/Xwt.WPF/Xwt.WPF.csproj b/Xwt.WPF/Xwt.WPF.csproj
index 29498b6b2..7f89d8c85 100644
--- a/Xwt.WPF/Xwt.WPF.csproj
+++ b/Xwt.WPF/Xwt.WPF.csproj
@@ -9,6 +9,7 @@
     <AssemblyName>Xwt.WPF</AssemblyName>
     <ProductVersion>8.0.30703</ProductVersion>
     <SchemaVersion>2.0</SchemaVersion>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>True</DebugSymbols>
diff --git a/Xwt.XamMac/Xwt.XamMac.csproj b/Xwt.XamMac/Xwt.XamMac.csproj
index d56701cb9..6a9277f74 100644
--- a/Xwt.XamMac/Xwt.XamMac.csproj
+++ b/Xwt.XamMac/Xwt.XamMac.csproj
@@ -11,6 +11,7 @@
     <SchemaVersion>2.0</SchemaVersion>
     <SignAssembly>True</SignAssembly>
     <AssemblyOriginatorKeyFile>..\xwt.snk</AssemblyOriginatorKeyFile>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>True</DebugSymbols>
diff --git a/Xwt/Xwt.csproj b/Xwt/Xwt.csproj
index 93763315a..2d071dc67 100644
--- a/Xwt/Xwt.csproj
+++ b/Xwt/Xwt.csproj
@@ -11,6 +11,7 @@
     <AssemblyOriginatorKeyFile>..\xwt.snk</AssemblyOriginatorKeyFile>
     <ProductVersion>8.0.30703</ProductVersion>
     <SchemaVersion>2.0</SchemaVersion>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>True</DebugSymbols>
@@ -361,16 +362,4 @@
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <ItemGroup />
-  <ProjectExtensions>
-    <MonoDevelop>
-      <Properties>
-        <Policies>
-          <DotNetNamingPolicy DirectoryNamespaceAssociation="Flat" ResourceNamePolicy="FileFormatDefault" />
-        </Policies>
-      </Properties>
-    </MonoDevelop>
-  </ProjectExtensions>
-  <ItemGroup />
-  <ItemGroup />
-  <ItemGroup />
 </Project>
\ No newline at end of file