diff --git a/src/AppsDownloader/AppsDownloader.csproj b/src/AppsDownloader/AppsDownloader.csproj
index ea86b1e..576690f 100644
--- a/src/AppsDownloader/AppsDownloader.csproj
+++ b/src/AppsDownloader/AppsDownloader.csproj
@@ -45,6 +45,12 @@
   <PropertyGroup>
     <RunPostBuildEvent>OnBuildSuccess</RunPostBuildEvent>
   </PropertyGroup>
+  <PropertyGroup>
+    <SignAssembly>true</SignAssembly>
+  </PropertyGroup>
+  <PropertyGroup>
+    <AssemblyOriginatorKeyFile>..\..\..\.helper\SilDev.pfx</AssemblyOriginatorKeyFile>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="SilDev.CSharpLib">
@@ -76,7 +82,7 @@
     <Compile Include="Libraries\CorePaths.cs" />
     <Compile Include="Libraries\Network.cs" />
     <Compile Include="Libraries\Shareware.cs" />
-	<Compile Include="Windows\SourceManagerForm.cs">
+    <Compile Include="Windows\SourceManagerForm.cs">
       <SubType>Form</SubType>
     </Compile>
     <Compile Include="Windows\SourceManagerForm.Designer.cs">
@@ -118,7 +124,7 @@
       <Generator>ResXFileCodeGenerator</Generator>
       <LastGenOutput>en-US.Designer.cs</LastGenOutput>
     </EmbeddedResource>
-	<EmbeddedResource Include="Windows\SourceManagerForm.resx">
+    <EmbeddedResource Include="Windows\SourceManagerForm.resx">
       <DependentUpon>SourceManagerForm.cs</DependentUpon>
     </EmbeddedResource>
     <EmbeddedResource Include="Windows\AppInfoForm.resx">
@@ -147,6 +153,7 @@
       <SubType>Designer</SubType>
     </None>
     <None Include="Resources\NsisData.dat" />
+    <None Include="..\..\..\.helper\SilDev.pfx" />
   </ItemGroup>
   <ItemGroup>
     <None Include="App.config" />
diff --git a/src/AppsDownloader/AppsDownloader64.csproj b/src/AppsDownloader/AppsDownloader64.csproj
index 61fa28b..1c8c255 100644
--- a/src/AppsDownloader/AppsDownloader64.csproj
+++ b/src/AppsDownloader/AppsDownloader64.csproj
@@ -49,6 +49,12 @@
   <PropertyGroup>
     <ApplicationManifest>app64.manifest</ApplicationManifest>
   </PropertyGroup>
+  <PropertyGroup>
+    <SignAssembly>true</SignAssembly>
+  </PropertyGroup>
+  <PropertyGroup>
+    <AssemblyOriginatorKeyFile>..\..\..\.helper\SilDev.pfx</AssemblyOriginatorKeyFile>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="SilDev.CSharpLib64">
@@ -154,6 +160,7 @@
       <SubType>Designer</SubType>
     </None>
     <None Include="Resources\NsisData.dat" />
+    <None Include="..\..\..\.helper\SilDev.pfx" />
   </ItemGroup>
   <ItemGroup>
     <None Include="App.config" />
diff --git a/src/AppsLauncher/AppsLauncher.csproj b/src/AppsLauncher/AppsLauncher.csproj
index c9a304b..0725b11 100644
--- a/src/AppsLauncher/AppsLauncher.csproj
+++ b/src/AppsLauncher/AppsLauncher.csproj
@@ -42,7 +42,7 @@
     <GenerateSerializationAssemblies>Auto</GenerateSerializationAssemblies>
   </PropertyGroup>
   <PropertyGroup>
-    <SignAssembly>false</SignAssembly>
+    <SignAssembly>true</SignAssembly>
   </PropertyGroup>
   <PropertyGroup>
     <SignManifests>false</SignManifests>
@@ -50,6 +50,9 @@
   <PropertyGroup>
     <ApplicationManifest>app.manifest</ApplicationManifest>
   </PropertyGroup>
+  <PropertyGroup>
+    <AssemblyOriginatorKeyFile>..\..\..\.helper\SilDev.pfx</AssemblyOriginatorKeyFile>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="SilDev.CSharpLib">
@@ -144,6 +147,7 @@
       <DependentUpon>SettingsForm.cs</DependentUpon>
     </EmbeddedResource>
     <None Include="app.manifest" />
+    <None Include="..\..\..\.helper\SilDev.pfx" />
   </ItemGroup>
   <ItemGroup>
     <None Include="App.config" />
diff --git a/src/AppsLauncher/AppsLauncher64.csproj b/src/AppsLauncher/AppsLauncher64.csproj
index 90a7c35..da3d8e0 100644
--- a/src/AppsLauncher/AppsLauncher64.csproj
+++ b/src/AppsLauncher/AppsLauncher64.csproj
@@ -45,7 +45,7 @@
     <GenerateSerializationAssemblies>Auto</GenerateSerializationAssemblies>
   </PropertyGroup>
   <PropertyGroup>
-    <SignAssembly>false</SignAssembly>
+    <SignAssembly>true</SignAssembly>
   </PropertyGroup>
   <PropertyGroup>
     <SignManifests>false</SignManifests>
@@ -53,6 +53,9 @@
   <PropertyGroup>
     <ApplicationManifest>app64.manifest</ApplicationManifest>
   </PropertyGroup>
+  <PropertyGroup>
+    <AssemblyOriginatorKeyFile>..\..\..\.helper\SilDev.pfx</AssemblyOriginatorKeyFile>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="SilDev.CSharpLib64">
@@ -145,6 +148,7 @@
       <DependentUpon>SettingsForm.cs</DependentUpon>
     </EmbeddedResource>
     <None Include="app64.manifest" />
+    <None Include="..\..\..\.helper\SilDev.pfx" />
   </ItemGroup>
   <ItemGroup>
     <None Include="App.config" />
diff --git a/src/AppsLauncherUpdater/AppsSuiteUpdater.csproj b/src/AppsLauncherUpdater/AppsSuiteUpdater.csproj
index 56a7f36..9300c08 100644
--- a/src/AppsLauncherUpdater/AppsSuiteUpdater.csproj
+++ b/src/AppsLauncherUpdater/AppsSuiteUpdater.csproj
@@ -43,6 +43,12 @@
   <PropertyGroup>
     <ApplicationManifest>app.manifest</ApplicationManifest>
   </PropertyGroup>
+  <PropertyGroup>
+    <SignAssembly>true</SignAssembly>
+  </PropertyGroup>
+  <PropertyGroup>
+    <AssemblyOriginatorKeyFile>..\..\..\.helper\SilDev.pfx</AssemblyOriginatorKeyFile>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="SilDev.CSharpLib">
       <SpecificVersion>False</SpecificVersion>
@@ -103,6 +109,7 @@
       <DesignTime>True</DesignTime>
     </Compile>
     <None Include="app.manifest" />
+    <None Include="..\..\..\.helper\SilDev.pfx" />
   </ItemGroup>
   <ItemGroup>
     <None Include="App.config" />