diff --git a/Directory.Packages.props b/Directory.Packages.props
index fd00f3ef3dd..23cee35001f 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -4,13 +4,6 @@
     <OTelLatestStableVer>1.6.0</OTelLatestStableVer>
   </PropertyGroup>
 
-  <Target Name="PreparePackageValidation" BeforeTargets="Restore">
-    <PropertyGroup>
-      <EnablePackageValidation Condition="'$(EnablePackageValidation)' == ''">true</EnablePackageValidation>
-      <PackageValidationBaselineVersion Condition="'$(MinVerTagPrefix)' == 'core-'">$(OTelLatestStableVer)</PackageValidationBaselineVersion>
-    </PropertyGroup>
-  </Target>
-
   <!--
       This section covers packages that are directly referenced by the NuGet packages published from this repository.
       Any security vulnerability in these packages or their downstream dependencies will be considered as a security
@@ -78,7 +71,6 @@
     <PackageVersion Include="Grpc.Tools" Version="[2.56.2,3.0)" />
     <PackageVersion Include="Microsoft.CodeAnalysis.PublicApiAnalyzers" Version="[3.11.0-beta1.23402.2]" />
     <PackageVersion Include="Microsoft.Data.SqlClient" Version="2.1.2" />
-    <PackageVersion Include="Microsoft.DotNet.ApiCompat" Version="6.0.0-beta.21308.1" />
     <PackageVersion Include="Microsoft.Extensions.Hosting" Version="[3.1.6,5.0)" />
     <PackageVersion Include="Microsoft.Extensions.Http" Version="3.1.20" />
     <PackageVersion Include="Microsoft.Extensions.Logging.Abstractions" Version="[6.0.0,)" />
diff --git a/NuGet.config b/NuGet.config
index 6f5c8246395..ca17f1b8088 100644
--- a/NuGet.config
+++ b/NuGet.config
@@ -4,7 +4,6 @@
     <clear />
     <add key="NuGet" value="https://api.nuget.org/v3/index.json" />
     <add key="dotnet8" value="https://dnceng.pkgs.visualstudio.com/public/_packaging/dotnet8/nuget/v3/index.json" />
-    <add key=".Net Core Tools" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json" />
   </packageSources>
 
   <!-- Define mappings by adding package patterns beneath the target source. -->
@@ -17,9 +16,6 @@
     <packageSource key="dotnet8">
       <package pattern="Microsoft.CodeAnalysis.PublicApiAnalyzers" />
     </packageSource>
-    <packageSource key=".Net Core Tools">
-      <package pattern="Microsoft.DotNet.ApiCompat" />
-    </packageSource>
   </packageSourceMapping>
 
   <disabledPackageSources />
diff --git a/build/Common.prod.props b/build/Common.prod.props
index af8760b3ad7..baca9ebdffd 100644
--- a/build/Common.prod.props
+++ b/build/Common.prod.props
@@ -4,6 +4,7 @@
   <PropertyGroup>
     <CodeAnalysisRuleSet>$(MSBuildThisFileDirectory)/OpenTelemetry.prod.ruleset</CodeAnalysisRuleSet>
     <ExposeExperimentalFeatures Condition="'$(ExposeExperimentalFeatures)' == ''">true</ExposeExperimentalFeatures>
+    <EnablePackageValidation Condition="'$(EnablePackageValidation)' == ''">false</EnablePackageValidation>
   </PropertyGroup>
 
   <PropertyGroup Label="PackageProperties">
diff --git a/src/Directory.Build.targets b/src/Directory.Build.targets
index 48cad82a63c..203352a3f75 100644
--- a/src/Directory.Build.targets
+++ b/src/Directory.Build.targets
@@ -1,6 +1,8 @@
 <Project>
 
   <PropertyGroup>
+    <!-- Note: PackageValidationBaselineVersion is defined in targets because $(MinVerTagPrefix) is not available to props as they apply before csproj. -->
+    <PackageValidationBaselineVersion Condition="'$(MinVerTagPrefix)' == 'core-'">$(OTelLatestStableVer)</PackageValidationBaselineVersion>
     <TargetFrameworkMonikerAssemblyAttributesPath>$([System.IO.Path]::Combine('$(IntermediateOutputPath)','$(TargetFrameworkMoniker).AssemblyAttributes$(DefaultLanguageSourceExtension)'))</TargetFrameworkMonikerAssemblyAttributesPath>
   </PropertyGroup>