diff --git a/src/35MSSharedLib1024.snk b/src/35MSSharedLib1024.snk
new file mode 100644
index 0000000000..695f1b3877
Binary files /dev/null and b/src/35MSSharedLib1024.snk differ
diff --git a/src/Bicep.Types.Az/Bicep.Types.Az.csproj b/src/Bicep.Types.Az/Bicep.Types.Az.csproj
index ef7297c058..c96fe8dfcf 100644
--- a/src/Bicep.Types.Az/Bicep.Types.Az.csproj
+++ b/src/Bicep.Types.Az/Bicep.Types.Az.csproj
@@ -51,4 +51,7 @@
       <EmbeddedResource Include="%(TypeFiles.CompressedFile)" LogicalName="%(LogicalName)" />
     </ItemGroup>
   </Target>
+
+  <!-- Need to sign the assembly with a strong name in Official Build. -->
+  <Import Project="$(EnlistmentRoot)\StrongName.props" />
 </Project>
\ No newline at end of file
diff --git a/src/Directory.Build.props b/src/Directory.Build.props
index 38bd1fe979..65ca6e6ecd 100644
--- a/src/Directory.Build.props
+++ b/src/Directory.Build.props
@@ -9,6 +9,7 @@
     <RestorePackagesWithLockFile>true</RestorePackagesWithLockFile>
     <RestoreLockedMode Condition="'$(CI)' == 'true'">true</RestoreLockedMode>
     <Copyright>© Microsoft Corporation. All rights reserved.</Copyright>
+    <EnlistmentRoot>$(MSBuildThisFileDirectory.TrimEnd('\\'))</EnlistmentRoot>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/StrongName.props b/src/StrongName.props
new file mode 100644
index 0000000000..30622ca95d
--- /dev/null
+++ b/src/StrongName.props
@@ -0,0 +1,8 @@
+<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <!-- TF_BUILD is a read-only predefined variable in ADO. It is set to True when starting a build task. -->
+  <PropertyGroup Condition="'$(TF_BUILD)' == 'True'">
+    <SignAssembly>true</SignAssembly>  
+    <DelaySign>true</DelaySign> 
+    <AssemblyOriginatorKeyFile Condition="'$(AssemblyOriginatorKeyFile)' == ''">$(MSBuildThisFileDirectory)35MSSharedLib1024.snk</AssemblyOriginatorKeyFile>    
+  </PropertyGroup>
+</Project>
\ No newline at end of file