diff --git a/eng/Signing.props b/eng/Signing.props
index 7def3013b89414..3d5e9960834385 100644
--- a/eng/Signing.props
+++ b/eng/Signing.props
@@ -47,7 +47,7 @@
 
   <Target Name="SetupFilesToSign">
     <!-- Ensure that we don't miss the DAC or DBI with the globbing below -->
-    <PropertyGroup Condition="'$(SignDiagnostics)' == 'true'">
+    <PropertyGroup Condition="'$(SignDiagnostics)' == 'true' or '$(SignDiagnosticsPackages)' == 'true'">
       <AllowEmptySignList>false</AllowEmptySignList>
     </PropertyGroup>
 
@@ -65,11 +65,11 @@
                     CertificateName="MicrosoftSHA2" />
     </ItemGroup>
     
-    <ItemGroup Condition="'$(SignFinalPackages)' == 'true'">
+    <ItemGroup Condition="'$(SignDiagnosticsPackages)' == 'true'">
       <!-- The cross OS diagnostics symbol packages need to be signed as they are the only packages
       that have a specific version of assets that are only meant to be indexed in symbol servers.
       Since only *symbols.nupkg get indexed, and installer doesn't produce these, we need to glob them for signing. -->
-      <ItemsToSign Include="$(DownloadDirectory)**\*CrossOsDiag*.nupkg" />
+      <ItemsToSign Include="$(PackagesFolder)\**\*CrossOsDiag*.nupkg" />
     </ItemGroup>
   </Target>
 
diff --git a/eng/Subsets.props b/eng/Subsets.props
index 8c389ed8fcca75..d328c72ff6194b 100644
--- a/eng/Subsets.props
+++ b/eng/Subsets.props
@@ -258,7 +258,7 @@
   </ItemGroup>
 
   <ItemGroup Condition="$(_subset.Contains('+host.pkg+'))">
-    <PkgprojProjectToBuild Include="$(InstallerProjectRoot)pkg\projects\**\*.pkgproj" SignPhase="MsiFiles" BuildInParallel="false" />
+    <PkgprojProjectToBuild Include="$(InstallerProjectRoot)pkg\projects\host-packages.proj" SignPhase="MsiFiles" BuildInParallel="false" />
     <ProjectToBuild Include="@(PkgprojProjectToBuild)" Pack="true" Category="host" />
   </ItemGroup>
   
diff --git a/eng/pipelines/common/upload-intermediate-artifacts-step.yml b/eng/pipelines/common/upload-intermediate-artifacts-step.yml
new file mode 100644
index 00000000000000..a0741b7b6820f2
--- /dev/null
+++ b/eng/pipelines/common/upload-intermediate-artifacts-step.yml
@@ -0,0 +1,20 @@
+parameters:
+  name: ''
+
+steps:
+- task: CopyFiles@2
+  displayName: Prepare job-specific intermediate artifacts subdirectory
+  inputs:
+    SourceFolder: '$(Build.SourcesDirectory)/artifacts/packages/$(_BuildConfig)'
+    Contents: |
+      Shipping/**/*
+      NonShipping/**/*
+    TargetFolder: '$(Build.StagingDirectory)/IntermediateArtifacts/${{ parameters.name }}'
+    CleanTargetFolder: true
+
+- task: PublishBuildArtifacts@1
+  displayName: Publish intermediate artifacts
+  inputs:
+    pathToPublish: '$(Build.StagingDirectory)/IntermediateArtifacts'
+    artifactName: IntermediateArtifacts
+    artifactType: container
diff --git a/eng/pipelines/common/upload-unsigned-artifacts-step.yml b/eng/pipelines/common/upload-unsigned-artifacts-step.yml
deleted file mode 100644
index c4fea2adaa634b..00000000000000
--- a/eng/pipelines/common/upload-unsigned-artifacts-step.yml
+++ /dev/null
@@ -1,20 +0,0 @@
-parameters:
-  name: ''
-
-steps:
-- task: CopyFiles@2
-  displayName: Prepare job-specific intermediate unsigned artifacts subdirectory
-  inputs:
-    SourceFolder: '$(Build.SourcesDirectory)/artifacts/packages/$(_BuildConfig)'
-    Contents: |
-      Shipping/**/*
-      NonShipping/**/*
-    TargetFolder: '$(Build.StagingDirectory)/UnsignedArtifacts/${{ parameters.name }}'
-    CleanTargetFolder: true
-
-- task: PublishBuildArtifacts@1
-  displayName: Publish intermediate unsigned artifacts
-  inputs:
-    pathToPublish: '$(Build.StagingDirectory)/UnsignedArtifacts'
-    artifactName: IntermediateUnsignedArtifacts
-    artifactType: container
diff --git a/eng/pipelines/coreclr/templates/build-job.yml b/eng/pipelines/coreclr/templates/build-job.yml
index 42b1adffd09562..82499e2741796a 100644
--- a/eng/pipelines/coreclr/templates/build-job.yml
+++ b/eng/pipelines/coreclr/templates/build-job.yml
@@ -259,7 +259,6 @@ jobs:
           archType: ${{ parameters.archType }}
           osGroup: ${{ parameters.osGroup }}
           osSubgroup: ${{ parameters.osSubgroup }}
-          signCrossDac: ${{ parameters.signBinaries }}
 
     - ${{ if and(ne(parameters.compilerName, 'gcc'), ne(parameters.testGroup, ''), ne(parameters.testGroup, 'clrTools')) }}:
       # Publish test native components for consumption by test execution.
@@ -284,7 +283,7 @@ jobs:
 
     # Save packages using the prepare-signed-artifacts format.
     - ${{ if and(eq(parameters.isOfficialBuild, true), ne(parameters.testGroup, 'clrTools')) }}:
-      - template: /eng/pipelines/common/upload-unsigned-artifacts-step.yml
+      - template: /eng/pipelines/common/upload-intermediate-artifacts-step.yml
         parameters:
           name: ${{ parameters.platform }}
 
diff --git a/eng/pipelines/coreclr/templates/crossdac-build.yml b/eng/pipelines/coreclr/templates/crossdac-build.yml
index 99f04c82d17725..575e09f3c31b56 100644
--- a/eng/pipelines/coreclr/templates/crossdac-build.yml
+++ b/eng/pipelines/coreclr/templates/crossdac-build.yml
@@ -2,7 +2,6 @@ parameters:
   archType: ''
   osGroup: ''
   osSubgroup: ''
-  signCrossDac: false
 
 steps:
   # Always build the crossdac, that way we know in CI/PR if things break to build.
@@ -31,23 +30,6 @@ steps:
           !**/sharedFramework/**/*
         TargetFolder: '$(buildMuslDacStagingPath)'
 
-    # Sign diagnostic files on Windows
-    - ${{ if eq(parameters.signCrossDac, true) }}:
-      - powershell: >-
-          eng\common\build.ps1 -ci -sign -restore -configuration:$(buildConfig) -warnaserror:0
-          /p:DiagnosticsFilesRoot="$(buildLinuxDacStagingPath)"
-          /p:SignDiagnostics=true
-          /p:DotNetSignType=$(SignType)
-          -projects $(Build.SourcesDirectory)\eng\empty.csproj
-        displayName: Sign Linux CrossDac
-      - powershell: >-
-          eng\common\build.ps1 -ci -sign -restore -configuration:$(buildConfig) -warnaserror:0
-          /p:DiagnosticsFilesRoot="$(buildMuslDacStagingPath)"
-          /p:SignDiagnostics=true
-          /p:DotNetSignType=$(SignType)
-          -projects $(Build.SourcesDirectory)\eng\empty.csproj
-        displayName: Sign Linux-musl CrossDac
-
   - ${{ if eq(parameters.osGroup, 'Linux') }}:
     - task: CopyFiles@2
       displayName: Gather runtime for CrossDac
diff --git a/eng/pipelines/coreclr/templates/crossdac-pack.yml b/eng/pipelines/coreclr/templates/crossdac-pack.yml
index f876a85d33febb..c782e363306f6d 100644
--- a/eng/pipelines/coreclr/templates/crossdac-pack.yml
+++ b/eng/pipelines/coreclr/templates/crossdac-pack.yml
@@ -42,6 +42,8 @@ jobs:
         value: '/p:OfficialBuildId=$(Build.BuildNumber)'
       - name: crossDacArgs
         value: '/p:CrossDacArtifactsDir=$(crossDacArtifactPath)/$(buildCrossDacArtifactName)'
+    - name: SignType
+      value: $[ coalesce(variables.OfficialSignType, 'real') ]
     - ${{ parameters.variables }}
 
     dependsOn:
@@ -50,6 +52,19 @@ jobs:
         - ${{ parameters.runtimeFlavor }}_${{ parameters.runtimeVariant }}_product_build_${{ platform }}_${{ parameters.buildConfig }}
 
     steps:
+    # Install MicroBuild for signing the package
+    - ${{ if eq(parameters.isOfficialBuild, true) }}:
+      - template: /eng/pipelines/common/restore-internal-tools.yml
+
+      - task: MicroBuildSigningPlugin@2
+        displayName: Install MicroBuild plugin for Signing
+        inputs:
+          signType: $(SignType)
+          zipSources: false
+          feedSource: https://dnceng.pkgs.visualstudio.com/_packaging/MicroBuildToolset/nuget/v3/index.json
+        continueOnError: false
+        condition: and(succeeded(), in(variables['SignType'], 'real', 'test'))
+
     - task: DownloadBuildArtifacts@0
       displayName: Download CrossDac artifacts
       inputs:
@@ -59,8 +74,18 @@ jobs:
     - script: $(Build.SourcesDirectory)$(dir)build$(scriptExt) -subset crossdacpack -arch $(archType) $(osArg) -c $(buildConfig) $(officialBuildIdArg) $(crossDacArgs) -ci
       displayName: Build crossdac packaging
 
+    # Sign diagnostic files
+    - ${{ if eq(parameters.isOfficialBuild, true) }}:
+      - powershell: >-
+          eng\common\build.ps1 -ci -sign -restore -configuration:$(buildConfig) -warnaserror:0
+          /p:PackagesFolder="$(Build.SourcesDirectory)/artifacts/packages/$(buildConfig)"
+          /p:SignDiagnosticsPackages=true
+          /p:DotNetSignType=$(SignType)
+          -projects $(Build.SourcesDirectory)\eng\empty.csproj
+        displayName: Sign CrossDac package and contents
+
     # Save packages using the prepare-signed-artifacts format.
-    - template: /eng/pipelines/common/upload-unsigned-artifacts-step.yml
+    - template: /eng/pipelines/common/upload-intermediate-artifacts-step.yml
       parameters:
         name: ${{ parameters.platform }}
 
diff --git a/eng/pipelines/installer/jobs/steps/upload-job-artifacts.yml b/eng/pipelines/installer/jobs/steps/upload-job-artifacts.yml
index 884ca0177e7f81..30032b7da22eee 100644
--- a/eng/pipelines/installer/jobs/steps/upload-job-artifacts.yml
+++ b/eng/pipelines/installer/jobs/steps/upload-job-artifacts.yml
@@ -7,7 +7,7 @@ parameters:
 steps:
 # Upload build artifacts (packages) to pipeline only if official, to save storage space.
 - ${{ if eq(parameters.isOfficialBuild, true) }}:
-  - template: /eng/pipelines/common/upload-unsigned-artifacts-step.yml
+  - template: /eng/pipelines/common/upload-intermediate-artifacts-step.yml
     parameters:
       name: ${{ parameters.name }}
 
diff --git a/eng/pipelines/libraries/build-job.yml b/eng/pipelines/libraries/build-job.yml
index d21a511d148af5..c0dd92d3e0555c 100644
--- a/eng/pipelines/libraries/build-job.yml
+++ b/eng/pipelines/libraries/build-job.yml
@@ -129,7 +129,7 @@ jobs:
           # platform-specific jobs' nupkgs automatically flow through the matching platform-specific
           # Installer build, but AllConfigurations should only be uploaded once, here.
           - ${{ if eq(parameters.isOfficialAllConfigurations, true) }}:
-            - template: /eng/pipelines/common/upload-unsigned-artifacts-step.yml
+            - template: /eng/pipelines/common/upload-intermediate-artifacts-step.yml
               parameters:
                 name: Libraries_AllConfigurations
 
diff --git a/eng/pipelines/official/jobs/prepare-signed-artifacts.yml b/eng/pipelines/official/jobs/prepare-signed-artifacts.yml
index 121644bfaa6924..2a1a11339633da 100644
--- a/eng/pipelines/official/jobs/prepare-signed-artifacts.yml
+++ b/eng/pipelines/official/jobs/prepare-signed-artifacts.yml
@@ -37,9 +37,9 @@ jobs:
                 in(variables['SignType'], 'real', 'test'))
 
   - task: DownloadBuildArtifacts@0
-    displayName: Download IntermediateUnsignedArtifacts
+    displayName: Download IntermediateArtifacts
     inputs:
-      artifactName: IntermediateUnsignedArtifacts
+      artifactName: IntermediateArtifacts
       downloadPath: $(Build.SourcesDirectory)\artifacts\PackageDownload
 
   - script: >-
diff --git a/eng/pipelines/runtime-official.yml b/eng/pipelines/runtime-official.yml
index 057dfd4635af9c..260a35e1c24144 100644
--- a/eng/pipelines/runtime-official.yml
+++ b/eng/pipelines/runtime-official.yml
@@ -72,7 +72,7 @@ stages:
       jobTemplate: /eng/pipelines/coreclr/templates/crossdac-pack.yml
       buildConfig: release
       platforms:
-      - Linux_musl_x64
+      - windows_x64
       jobParameters:
         isOfficialBuild: ${{ variables.isOfficialBuild }}
         crossDacPlatforms:
@@ -120,7 +120,7 @@ stages:
         buildArgs: -s mono+libs+host+packs -c $(_BuildConfig)
         nameSuffix: AllSubsets_Mono
         isOfficialBuild: ${{ variables.isOfficialBuild }}
-        extraStepsTemplate: /eng/pipelines/common/upload-unsigned-artifacts-step.yml
+        extraStepsTemplate: /eng/pipelines/common/upload-intermediate-artifacts-step.yml
         extraStepsParameters:
           name: MonoRuntimePacks
 
@@ -151,7 +151,7 @@ stages:
           nameSuffix: AllSubsets_Mono_LLVMJIT
           runtimeVariant: LLVMJIT
           isOfficialBuild: ${{ variables.isOfficialBuild }}
-          extraStepsTemplate: /eng/pipelines/common/upload-unsigned-artifacts-step.yml
+          extraStepsTemplate: /eng/pipelines/common/upload-intermediate-artifacts-step.yml
           extraStepsParameters:
             name: MonoRuntimePacks
       #LLVMAOT
@@ -164,7 +164,7 @@ stages:
           nameSuffix: AllSubsets_Mono_LLVMAOT
           runtimeVariant: LLVMAOT
           isOfficialBuild: ${{ variables.isOfficialBuild }}
-          extraStepsTemplate: /eng/pipelines/common/upload-unsigned-artifacts-step.yml
+          extraStepsTemplate: /eng/pipelines/common/upload-intermediate-artifacts-step.yml
           extraStepsParameters:
             name: MonoRuntimePacks
 
diff --git a/eng/pipelines/runtimelab.yml b/eng/pipelines/runtimelab.yml
index dc205da3682b13..facd5bc264aedf 100644
--- a/eng/pipelines/runtimelab.yml
+++ b/eng/pipelines/runtimelab.yml
@@ -92,7 +92,7 @@ stages:
         extraStepsTemplate: /eng/pipelines/runtimelab/runtimelab-post-build-steps.yml
         extraStepsParameters:
           uploadLibrariesTests: ${{ eq(variables.isOfficialBuild, false) }}
-          uploadUnsignedArtifacts: false
+          uploadIntermediateArtifacts: false
         ${{ if eq(variables.isOfficialBuild, false) }}:
           buildArgs: -s clr+libs+libs.tests+host+packs -c $(_BuildConfig) /p:ArchiveTests=true
         ${{ if eq(variables.isOfficialBuild, true) }}:
@@ -115,7 +115,7 @@ stages:
         ${{ if eq(variables.isOfficialBuild, true) }}:
           extraStepsTemplate: /eng/pipelines/runtimelab/runtimelab-post-build-steps.yml
           extraStepsParameters:
-            uploadUnsignedArtifacts: true
+            uploadIntermediateArtifacts: true
             isOfficialBuild: true
             librariesBinArtifactName: libraries_bin_official_allconfigurations
 
diff --git a/eng/pipelines/runtimelab/runtimelab-post-build-steps.yml b/eng/pipelines/runtimelab/runtimelab-post-build-steps.yml
index 124b38f0819ea7..bd471c303b30df 100644
--- a/eng/pipelines/runtimelab/runtimelab-post-build-steps.yml
+++ b/eng/pipelines/runtimelab/runtimelab-post-build-steps.yml
@@ -9,7 +9,7 @@ parameters:
   isOfficialBuild: false
   uploadLibrariesTests: false
   uploadRuntimeTests: false
-  uploadUnsignedArtifacts: false
+  uploadIntermediateArtifacts: false
 
 steps:
   # Build coreclr native test output
@@ -69,7 +69,7 @@ steps:
       displayName: Build Assets
 
   # Upload unsigned artifacts
-  - ${{ if eq(parameters.uploadUnsignedArtifacts, true) }}:
-    - template: /eng/pipelines/common/upload-unsigned-artifacts-step.yml
+  - ${{ if eq(parameters.uploadIntermediateArtifacts, true) }}:
+    - template: /eng/pipelines/common/upload-intermediate-artifacts-step.yml
       parameters:
         name: ${{ parameters.platform }}${{ parameters.nameSuffix }}
diff --git a/src/installer/pkg/projects/Directory.Build.props b/src/installer/pkg/projects/Directory.Build.props
index 9d6ae93d467c39..b9ad8328b4d290 100644
--- a/src/installer/pkg/projects/Directory.Build.props
+++ b/src/installer/pkg/projects/Directory.Build.props
@@ -1,6 +1,5 @@
 <Project>
   <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.props, $(MSBuildThisFileDirectory)..))" />
-  <Import Project="Sdk.props" Sdk="Microsoft.DotNet.Build.Tasks.SharedFramework.Sdk" />
 
   <PropertyGroup>
     <PackagePlatform>AnyCPU</PackagePlatform>
@@ -46,22 +45,9 @@
     <RestoreAllBuildRids Condition="'$(RestoreAllBuildRids)' == ''">true</RestoreAllBuildRids>
   </PropertyGroup>
 
-  <PropertyGroup>
-    <VSInsertionProductName>NetCore</VSInsertionProductName>
-    <VSInsertionCommonPrefix>VS.Redist.Common</VSInsertionCommonPrefix>
-  </PropertyGroup>
-
-  <!-- Most packages need the host to be built first. -->
+  <!-- Host packages need the host to be built first. -->
   <ItemGroup Condition="'$(DisableOrderDependencies)' != 'true'">
     <OrderProjectReference Include="@(CorehostProjectToBuild)" />
-    <!-- NETCoreApp depproj requires binaries (CoreCLR, Libraries, Host) to be signed. -->
-    <OrderProjectReference
-      Condition="'$(MSBuildProjectExtension)' == '.depproj'"
-      Include="$(SigningToolsDir)\SignBinaries.proj" />
-    <!-- Pkgproj requires its depproj crossgen outputs to be signed. -->
-    <OrderProjectReference
-      Condition="'$(MSBuildProjectExtension)' == '.pkgproj'"
-      Include="$(SigningToolsDir)\SignR2RBinaries.proj" />
   </ItemGroup>
 
   <!-- In *.proj projects, the current phase's name is the same as the project name. -->
@@ -168,5 +154,9 @@
     <RuntimeIdentifier>$(PackageRID)</RuntimeIdentifier>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.DotNet.Build.Tasks.Packaging" Version="$(MicrosoftDotNetBuildTasksPackagingVersion)" PrivateAssets="all" IsImplicitlyDefined="true" />
+  </ItemGroup>
+
   <Import Project="$(RepoRoot)eng\native\naming.props" />
 </Project>
diff --git a/src/installer/pkg/projects/Directory.Build.targets b/src/installer/pkg/projects/Directory.Build.targets
index 383e5549c36e98..e29724f0f85eaf 100644
--- a/src/installer/pkg/projects/Directory.Build.targets
+++ b/src/installer/pkg/projects/Directory.Build.targets
@@ -1,32 +1,13 @@
 <Project>
   <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.targets, $(MSBuildThisFileDirectory)..))" />
-
-  <Import Project="Sdk.targets" Sdk="Microsoft.DotNet.Build.Tasks.SharedFramework.Sdk" />
-
-  <UsingTask TaskName="CreateFrameworkListFile" AssemblyFile="$(DotNetBuildTasksSharedFrameworkTaskFile)" />
-  <UsingTask TaskName="GenerateFileVersionProps" AssemblyFile="$(DotNetBuildTasksSharedFrameworkTaskFile)" />
-
   <PropertyGroup>
     <!--
       If we are stabilizing set the StableVersion property for the packages.
       Needs to happen in Directory.Build.targets to allow all the pkgproj's to set Version property first.
     -->
     <StableVersion Condition="'$(IncludePreReleaseLabelInPackageVersion)' != 'true'">$(Version)</StableVersion>
-    <MonoBundleLLVMOptimizer Condition="'$(MonoEnableLLVM)' == 'true'">true</MonoBundleLLVMOptimizer>
   </PropertyGroup>
 
-  <!--
-    Mono does not need some pkgproj (no host on mobile, no crossgen for desktop), so allow projects to
-    opt out.
-  -->
-  <Target Name="MonoSkipBuildProps"
-          Condition="'$(SkipBuildOnRuntimePackOnlyOS)' == 'true' and '$(RuntimeFlavor)' == 'Mono'"
-          BeforeTargets="GetSkipBuildProps">
-    <PropertyGroup>
-      <SkipBuild>true</SkipBuild>
-    </PropertyGroup>
-  </Target>
-
   <!--
     We should not build some pkgproj in source-build (i.e. targeting-pack).
   -->
@@ -38,16 +19,6 @@
     </PropertyGroup>
   </Target>
 
-  <PropertyGroup Condition="'$(RuntimeFlavor)' == 'Mono' and '$(TargetsMobile)' != 'true'">
-    <RuntimeSpecificFrameworkSuffix>.Mono</RuntimeSpecificFrameworkSuffix>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(MonoEnableLLVM)' == 'true' and '$(RuntimeFlavor)' == 'Mono' and '$(TargetsMobile)' != 'true' and '$(TargetsBrowser)' != 'true'">
-    <RuntimeSpecificFrameworkSuffix>.Mono.LLVM</RuntimeSpecificFrameworkSuffix>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(MonoBundleLLVMOptimizer)' == 'true' and '$(RuntimeFlavor)' == 'Mono' and '$(TargetsMobile)' != 'true' and '$(TargetsBrowser)' != 'true'">
-    <RuntimeSpecificFrameworkSuffix>.Mono.LLVM.AOT</RuntimeSpecificFrameworkSuffix>
-  </PropertyGroup>
-
   <!--
     For any Dependency items with a VersionProp, set it to the property by that name given by the
     version generation target. For any with a VersionFromProject, query the ProductVersion from that
@@ -157,43 +128,58 @@
   <!--
     Finds symbol files and injects them into the package build.
   -->
-  <Target Name="GetSymbolPackageFiles"
-          BeforeTargets="GetPackageFiles"
-          DependsOnTargets="
-            SetupFindSiblingSymbolFilesByNameForSymbolPackage;
-            FindSiblingSymbolFilesByName">
+
+  <!--
+    Finds symbol files and injects them into the package build.
+  -->
+  <Target Name="GetSymbolPackageFiles" BeforeTargets="GetPackageFiles">
     <ItemGroup Condition="'$(SymbolFileExtension)' != ''">
-      <AdditionalLibPackageExcludes Include="%2A%2A\%2A$(SymbolFileExtension)" />
+      <AdditionalLibPackageExcludes Include="%2A%2A\%2A$(SymbolFileExtension)"/>
     </ItemGroup>
-    <ItemGroup Condition="'$(CrossGenSymbolExtension)' != ''">
-      <AdditionalLibPackageExcludes Include="%2A%2A\%2A$(CrossGenSymbolExtension)" />
+
+    <ItemGroup>
+      <NativeWithSymbolFile Include="@(NativeBinary)">
+        <TargetPath>runtimes/$(PackageTargetRuntime)/native</TargetPath>
+      </NativeWithSymbolFile>
+      <NativeWithSymbolFile Include="@(ArchitectureSpecificToolFile)">
+        <TargetPath>tools</TargetPath>
+      </NativeWithSymbolFile>
     </ItemGroup>
 
     <ItemGroup>
+      <!-- On Windows, trim ".dll" before adding ".pdb". -->
+      <WindowsNativeFile Include="@(NativeWithSymbolFile)"
+                         Condition="'%(NativeWithSymbolFile.Extension)'=='.dll' OR '%(NativeWithSymbolFile.Extension)'=='.exe'" />
+      <WindowsSymbolFile Include="@(WindowsNativeFile -> '%(RootDir)%(Directory)PDB\%(Filename).pdb')" />
+      <!-- Crossgened files (on windows) have both a *.pdb and a *.ni.pdb symbol file.  Include the *.ni.pdb file as well if it exists. -->
+      <WindowsSymbolFile Include="@(WindowsNativeFile -> '%(RootDir)%(Directory)PDB\%(Filename).ni.pdb')" />
+
       <!--
-        Discovered symbol files might already be in File, without IsSymbolFile set. Make sure we
-        keep the discovered one, which has IsSymbolFile=true.
+        Search for all xplat symbol file extensions on every xplat native binary. Some binaries have
+        no ".so" or ".dylib" extension, so we can't tell which convention its symbol files would
+        use. On xplat, the symbol extension is simply appended.
       -->
-      <File Remove="@(SiblingSymbolFile)" />
-      <File Include="@(SiblingSymbolFile)" />
-    </ItemGroup>
+      <NonWindowsNativeFile Include="@(NativeWithSymbolFile)"
+                            Exclude="@(WindowsNativeFile)" />
 
-    <!-- On Windows, native symbols are installed to a PDB subdirectory -->
-    <ItemGroup>
-      <WindowsSymbolFileInSubdirectory Include="@(WindowsSymbolFile -> '%(RootDir)%(Directory)PDB\%(Filename)%(Extension)')" />
-      <ExistingWindowsSymbolFileInSubdirectory Include="@(WindowsSymbolFileInSubdirectory)" Condition="Exists('%(Identity)')" />
-      <File Include="@(ExistingWindowsSymbolFileInSubdirectory)">
+      <NonWindowsSymbolFile Include="@(NonWindowsNativeFile -> '%(Identity)$(SymbolFileExtension)')" />
+
+      <ExistingWindowsSymbolFile Include="@(WindowsSymbolFile)" Condition="Exists('%(Identity)')" />
+      <ExistingNonWindowsSymbolFile Include="@(NonWindowsSymbolFile)" Condition="Exists('%(Identity)') AND '$(SkipPackagingXplatSymbols)'!='true'" />
+
+      <!-- Include all found symbols. -->
+      <File Include="@(ExistingWindowsSymbolFile);@(ExistingNonWindowsSymbolFile)">
         <IsSymbolFile>true</IsSymbolFile>
       </File>
     </ItemGroup>
 
     <PropertyGroup>
-      <NeedsPlaceholderPdb Condition="'@(ExistingNonWindowsSymbolFile)' != '' and '@(ExistingWindowsSymbolFile)' == ''">true</NeedsPlaceholderPdb>
+      <NeedsPlaceholderPdb Condition="'@(ExistingNonWindowsSymbolFile)'!='' AND '@(ExistingWindowsSymbolFile)'==''">true</NeedsPlaceholderPdb>
     </PropertyGroup>
 
     <ItemGroup>
-      <File Include="$(MSBuildThisFileDirectory)../_.pdb"
-            Condition="'$(NeedsPlaceholderPdb)' == 'true' AND '$(PackageTargetRuntime)' != ''">
+      <File Include="$(InstallerProjectRoot)\pkg\_.pdb"
+            Condition="'$(NeedsPlaceholderPdb)'=='true' AND '$(PackageTargetRuntime)'!=''">
         <TargetPath>runtimes/$(PackageTargetRuntime)/native</TargetPath>
         <IsSymbolFile>true</IsSymbolFile>
       </File>
@@ -213,163 +199,6 @@
     </ItemGroup>
   </Target>
 
-  <!-- override AssignPkgProjPackageDependenciesTargetFramework so that
-       it doesn't attempt to resolve all files in order to get dependency
-       TargetFrameworks.
-       https://github.com/dotnet/buildtools/issues/1273 -->
-  <Target Name="AssignPkgProjPackageDependenciesTargetFramework" DependsOnTargets="GetPkgProjPackageDependencies">
-    <SplitDependenciesBySupport Condition="'$(SplitDependenciesBySupport)' == 'true'" OriginalDependencies="@(PkgProjDependency)">
-      <Output TaskParameter="SplitDependencies" ItemName="_SplitPkgProjDependency" />
-    </SplitDependenciesBySupport>
-    <ItemGroup Condition="'@(_SplitPkgProjDependency)' != ''">
-      <PkgProjDependency Remove="@(PkgProjDependency)" />
-      <PkgProjDependency Include="@(_SplitPkgProjDependency)" />
-    </ItemGroup>
-    <ItemGroup>
-      <!-- ensure that unconstrained dependencies are also expanded in constrained TFM groups -->
-      <_PkgProjDependencyWithoutTFM Include="@(PkgProjDependency)" Condition="'%(PkgProjDependency.TargetFramework)' == '' AND '%(PkgProjDependency.TargetRuntime)' == '' AND '%(PkgProjDependency.DoNotExpand)' != 'true'" />
-      <_AllPkgProjTFMs Include="%(PkgProjDependency.TargetFramework)" Condition="'%(PkgProjDependency.DependencyKind)' == 'Direct'" />
-      <!-- Remove dependencies without a TFM so they can be replaced -->
-      <PkgProjDependency Remove="@(_PkgProjDependencyWithoutTFM)" />
-      <!-- operate on pkgproj dependencies and file dependencies -->
-      <PkgProjDependency Include="@(_PkgProjDependencyWithoutTFM)">
-        <TargetFramework>%(_AllPkgProjTFMs.Identity)</TargetFramework>
-      </PkgProjDependency>
-      <Dependency Include="@(PkgProjDependency)" Condition="'%(PkgProjDependency.DependencyKind)' == 'Direct'" />
-    </ItemGroup>
-  </Target>
-
-  <Target Name="GetNonPkgProjDependenciesToPackage"
-          Condition="'$(PackProjectDependencies)' == 'true'"
-          AfterTargets="ExpandProjectReferences">
-    <!-- allow projects to provide dependencies -->
-    <MSBuild Targets="GetDependenciesToPackage"
-             BuildInParallel="$(BuildInParallel)"
-             Projects="@(_NonPkgProjProjectReference)"
-             Properties="$(ProjectProperties)">
-      <Output TaskParameter="TargetOutputs"
-              ItemName="Dependency" />
-    </MSBuild>
-  </Target>
-
-  <Target Name="GetDependencyDataFileInclusionDefaults">
-    <PropertyGroup Condition="'$(BuildTargetPath)' != ''">
-      <FileVersionPropsTargetPath Condition="'$(FileVersionPropsTargetPath)' == ''">$(BuildTargetPath)$(Id).props</FileVersionPropsTargetPath>
-      <PlatformManifestTargetPath Condition="'$(PlatformManifestTargetPath)' == ''">$(BuildTargetPath)$(Id.Replace('.Internal', '')).PlatformManifest.txt</PlatformManifestTargetPath>
-    </PropertyGroup>
-  </Target>
-
-  <!-- Get data files (platform manifest, file version props) from depproj dependencies. -->
-  <Target Name="GetDepprojDependencyDataFiles">
-    <MSBuild
-      Projects="@(ProjectReference)"
-      Targets="GetDataFiles"
-      SkipNonExistentTargets="true">
-      <Output TaskParameter="TargetOutputs" ItemName="_depprojDataFile" />
-    </MSBuild>
-  </Target>
-
-  <Target Name="IncludeFileVersionPropsFile"
-          DependsOnTargets="GetDepprojDependencyDataFiles;GetDependencyDataFileInclusionDefaults"
-          BeforeTargets="GetFiles">
-    <!-- Create a copy with some per-pkgproj templates replaced. -->
-    <PropertyGroup>
-      <_propsFileTemplateFile Condition="'%(_depprojDataFile.PropsFile)' == 'true'">%(_depprojDataFile.Identity)</_propsFileTemplateFile>
-    </PropertyGroup>
-
-    <PropertyGroup Condition="Exists('$(_propsFileTemplateFile)')">
-      <_runtimeDependencyItems>@(RuntimeDependency)</_runtimeDependencyItems>
-      <_filledPropsFileContent>$([System.IO.File]::ReadAllText('$(_propsFileTemplateFile)')
-        .Replace("__PackageId__", "$(Id.Replace('.', '_'))")
-        .Replace("__PreferredPackages__", "$(Id);$(_runtimeDependencyItems)"))
-      </_filledPropsFileContent>
-
-      <_filledPropsFile>$(IntermediateOutputPath)$(MSBuildProjectName).props</_filledPropsFile>
-    </PropertyGroup>
-
-    <WriteLinesToFile
-      Condition="'$(_filledPropsFile)' != ''"
-      File="$(_filledPropsFile)"
-      Lines="$(_filledPropsFileContent)"
-      Overwrite="true" />
-
-    <ItemGroup Condition="'$(PackageTargetRuntime)' == '' AND '$(FileVersionPropsTargetPath)' != ''">
-      <File
-        Include="$(_filledPropsFile)"
-        TargetPath="$(FileVersionPropsTargetPath)" />
-    </ItemGroup>
-  </Target>
-
-  <Target Name="IncludePlatformManifestFile"
-          DependsOnTargets="GetDepprojDependencyDataFiles;GetDependencyDataFileInclusionDefaults"
-          BeforeTargets="GetFiles">
-    <!-- Create a copy with some per-pkgproj templates replaced. -->
-    <PropertyGroup>
-      <_platformManifestFileTemplateFile Condition="'%(_depprojDataFile.PlatformManifestFile)' == 'true'">%(_depprojDataFile.Identity)</_platformManifestFileTemplateFile>
-    </PropertyGroup>
-
-    <PropertyGroup Condition="Exists('$(_platformManifestFileTemplateFile)')">
-      <_runtimeDependencyItems>@(RuntimeDependency)</_runtimeDependencyItems>
-      <_filledPlatformManifestFileContent>$([System.IO.File]::ReadAllText('$(_platformManifestFileTemplateFile)')
-        .Replace("__PackageId__", "$(Id)"))
-      </_filledPlatformManifestFileContent>
-
-      <_filledPlatformManifestFile>$(IntermediateOutputPath)PlatformManifest.txt</_filledPlatformManifestFile>
-    </PropertyGroup>
-
-    <WriteLinesToFile
-      Condition="'$(_filledPlatformManifestFile)' != ''"
-      File="$(_filledPlatformManifestFile)"
-      Lines="$(_filledPlatformManifestFileContent)"
-      Overwrite="true" />
-
-    <ItemGroup Condition="'$(PlatformManifestTargetPath)' != ''">
-      <File
-        Include="$(_filledPlatformManifestFile)"
-        TargetPath="$(PlatformManifestTargetPath)" />
-    </ItemGroup>
-  </Target>
-
-  <Target Name="IncludeFrameworkListFile"
-          BeforeTargets="GetFiles"
-          DependsOnTargets="GetSymbolPackageFiles"
-          Condition="
-            '$(FrameworkListTargetPath)' != '' AND
-            (
-              '$(PackageTargetRuntime)' == '' OR
-              '$(PackageTargetRuntime)' == '$(PackageRID)'
-            )">
-    <PropertyGroup>
-      <FrameworkListFilename Condition="'$(FrameworkListFilename)' == ''">FrameworkList.xml</FrameworkListFilename>
-      <FrameworkListFile>$(IntermediateOutputPath)$(FrameworkListFilename)</FrameworkListFile>
-    </PropertyGroup>
-
-    <ItemGroup>
-      <FrameworkListRootAttributes Include="Name" Value="$(FrameworkListName)" />
-      <FrameworkListRootAttributes Include="TargetFrameworkIdentifier" Value="$(FrameworkListTargetFrameworkIdentifier)" />
-      <FrameworkListRootAttributes Include="TargetFrameworkVersion" Value="$(FrameworkListTargetFrameworkVersion)" />
-      <FrameworkListRootAttributes Include="FrameworkName" Value="$(FrameworkListFrameworkName)" />
-    </ItemGroup>
-
-    <Error
-      Condition="'%(FrameworkListRootAttributes.Value)' == ''"
-      Text="Missing value for property 'FrameworkList%(FrameworkListRootAttributes.Identity)'" />
-
-    <CreateFrameworkListFile
-      Files="@(File)"
-      FileClassifications="@(FrameworkListFileClass)"
-      TargetFile="$(FrameworkListFile)"
-      TargetFilePrefixes="ref/;runtimes/"
-      RootAttributes="@(FrameworkListRootAttributes)"
-      SingleFileHostIncludeFilenames="@(SingleFileHostIncludeFilename)" />
-
-    <ItemGroup>
-      <File Include="$(FrameworkListFile)">
-        <TargetPath>$(FrameworkListTargetPath)</TargetPath>
-      </File>
-    </ItemGroup>
-  </Target>
-
   <!--
     Create RuntimeDependencies just before they're needed. Use MSBuild to get their identities, like
     GetPkgProjPackageDependencies: this finds package id and version without any guesswork.
@@ -388,25 +217,4 @@
       <RuntimeDependency Include="@(_runtimeDependencyIdentity)" />
     </ItemGroup>
   </Target>
-
-  <!-- Override adding packages to get the crossgen tool to only pull down the WinRT targeting pack and DiaSymReader since we have everything else locally. -->
-  <Target Name="AddCrossgenToolPackageReferences"
-          BeforeTargets="CollectPackageReferences">
-    <ItemGroup>
-      <!-- This tool is a prebuilt not buildable from source. -->
-      <CrossgenToolPackageReference
-        Condition="'$(DotNetBuildFromSource)' != 'true'"
-        Include="Microsoft.DiaSymReader.Native"
-        Version="$(MicrosoftDiaSymReaderNativeVersion)" />
-
-      <!--
-        If any tool packages are missing, add them with ExcludeAssets=All. Be careful not to modify
-        existing PackageReferences.
-      -->
-      <PackageReference
-        Include="@(CrossgenToolPackageReference)"
-        Exclude="@(PackageReference)"
-        ExcludeAssets="All" />
-    </ItemGroup>
-  </Target>
 </Project>
diff --git a/src/installer/pkg/projects/Microsoft.NETCore.DotNetHost/Microsoft.NETCore.DotNetHost.pkgproj b/src/installer/pkg/projects/Microsoft.NETCore.DotNetHost/Microsoft.NETCore.DotNetHost.pkgproj
index 50aa1919abb0c5..000ba4fe483997 100644
--- a/src/installer/pkg/projects/Microsoft.NETCore.DotNetHost/Microsoft.NETCore.DotNetHost.pkgproj
+++ b/src/installer/pkg/projects/Microsoft.NETCore.DotNetHost/Microsoft.NETCore.DotNetHost.pkgproj
@@ -4,7 +4,6 @@
     <VersionProp>HostVersion</VersionProp>
 
     <InstallerName>dotnet-host</InstallerName>
-    <SkipBuildOnRuntimePackOnlyOS>true</SkipBuildOnRuntimePackOnlyOS>
   </PropertyGroup>
 
   <ItemGroup Condition="'$(PackageTargetRuntime)' != ''">
diff --git a/src/installer/pkg/projects/Microsoft.NETCore.DotNetHostPolicy/Microsoft.NETCore.DotNetHostPolicy.pkgproj b/src/installer/pkg/projects/Microsoft.NETCore.DotNetHostPolicy/Microsoft.NETCore.DotNetHostPolicy.pkgproj
index 203b5dcaebef3e..06f4c389123734 100644
--- a/src/installer/pkg/projects/Microsoft.NETCore.DotNetHostPolicy/Microsoft.NETCore.DotNetHostPolicy.pkgproj
+++ b/src/installer/pkg/projects/Microsoft.NETCore.DotNetHostPolicy/Microsoft.NETCore.DotNetHostPolicy.pkgproj
@@ -2,7 +2,6 @@
 
   <PropertyGroup>
     <VersionProp>HostPolicyVersion</VersionProp>
-    <SkipBuildOnRuntimePackOnlyOS>true</SkipBuildOnRuntimePackOnlyOS>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/installer/pkg/projects/Microsoft.NETCore.DotNetHostResolver/Microsoft.NETCore.DotNetHostResolver.pkgproj b/src/installer/pkg/projects/Microsoft.NETCore.DotNetHostResolver/Microsoft.NETCore.DotNetHostResolver.pkgproj
index 58653556eef241..5a49dbb69b2260 100644
--- a/src/installer/pkg/projects/Microsoft.NETCore.DotNetHostResolver/Microsoft.NETCore.DotNetHostResolver.pkgproj
+++ b/src/installer/pkg/projects/Microsoft.NETCore.DotNetHostResolver/Microsoft.NETCore.DotNetHostResolver.pkgproj
@@ -4,7 +4,6 @@
     <VersionProp>HostResolverVersion</VersionProp>
 
     <InstallerName>dotnet-hostfxr</InstallerName>
-    <SkipBuildOnRuntimePackOnlyOS>true</SkipBuildOnRuntimePackOnlyOS>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/installer/pkg/projects/host-packages.proj b/src/installer/pkg/projects/host-packages.proj
new file mode 100644
index 00000000000000..86981092e730e0
--- /dev/null
+++ b/src/installer/pkg/projects/host-packages.proj
@@ -0,0 +1,15 @@
+<Project>
+  <Import Sdk="Microsoft.Build.Traversal" Project="Sdk.props" />
+
+  <ItemGroup>
+    <ProjectReference Include="Microsoft.NETCore.DotNetHost\Microsoft.NETCore.DotNetHost.pkgproj" />
+    <ProjectReference Include="Microsoft.NETCore.DotNetHostPolicy\Microsoft.NETCore.DotNetHostPolicy.pkgproj" />
+    <ProjectReference Include="Microsoft.NETCore.DotNetHostResolver\Microsoft.NETCore.DotNetHostResolver.pkgproj" />
+    <ProjectReference Update="@(ProjectReference)" AdditionalProperties="PackageTargetRuntime=$(PackageRID)" />
+  </ItemGroup>
+
+  <Import Sdk="Microsoft.Build.Traversal" Project="Sdk.targets" />
+
+  <!-- Ordering matters! Overwriting the Pack target which should just invoke Build. -->
+  <Target Name="Pack" DependsOnTargets="Build" />
+</Project>
diff --git a/src/installer/publish/prepare-artifacts.proj b/src/installer/publish/prepare-artifacts.proj
index a2643b27131f7d..4a5ff2ddd3cd01 100644
--- a/src/installer/publish/prepare-artifacts.proj
+++ b/src/installer/publish/prepare-artifacts.proj
@@ -56,15 +56,6 @@
     <GenerateChecksums Items="@(ArtifactsForGeneratingChecksums)" />
   </Target>
 
-  <Target Name="SignPackages"
-          Condition="'$(SkipSigning)' != 'true' and '$(SignType)' != 'public'">
-    <Message Importance="High" Text="Signing final packages" />
-    <MSBuild
-      Projects="$(SigningToolsDir)\SignFinalPackages.proj"
-      Targets="Build"
-      Properties="DownloadDirectory=$(DownloadDirectory)" />
-  </Target>
-
   <Target Name="PreparePublishToAzureBlobFeed"
           DependsOnTargets="GetProductVersions;FindDownloadedArtifacts">
     <Error Condition="'$(PackagesUrl)'==''" Text="Missing property PackagesUrl" />
@@ -152,7 +143,6 @@
   <Target Name="Build"
           DependsOnTargets="
             FindDownloadedArtifacts;
-            SignPackages;
             CreateChecksums;
             PreparePublishToAzureBlobFeed">
     <Message Importance="High" Text="Complete!" />
diff --git a/src/installer/signing/Directory.Build.props b/src/installer/signing/Directory.Build.props
deleted file mode 100644
index 7c45d0300be126..00000000000000
--- a/src/installer/signing/Directory.Build.props
+++ /dev/null
@@ -1,11 +0,0 @@
-<Project>
-
-  <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.props, $(MSBuildThisFileDirectory)..))" />
-
-  <PropertyGroup>
-    <TargetFramework>$(NetCoreAppCurrent)</TargetFramework>
-
-    <!-- TODO: (Consolidation) Skip signing steps by default for non-official builds. https://github.com/dotnet/runtime/issues/1026 -->
-    <SkipSigning Condition="'$(DotNetSignType)' == ''">true</SkipSigning>
-  </PropertyGroup>
-</Project>
diff --git a/src/installer/signing/Directory.Build.targets b/src/installer/signing/Directory.Build.targets
deleted file mode 100644
index 7d95c6c7b7f9d9..00000000000000
--- a/src/installer/signing/Directory.Build.targets
+++ /dev/null
@@ -1,55 +0,0 @@
-<Project>
-
-  <!-- Ensure all projects in this stage have built. -->
-  <Target Name="EnsureProjectsBuilt">
-    <MSBuild Projects="@(StageProject)" Targets="Build" />
-  </Target>
-
-  <!--
-    Run Arcade's signing project directly. The 'eng/Signing.props' extensibility props file checks
-    if '$(<StageName>)' == 'true' and points Arcade to the correct files.
-  -->
-  <Target Name="RunArcadeSigning">
-    <PropertyGroup>
-      <SignStartTime>$([System.DateTime]::UtcNow)</SignStartTime>
-    </PropertyGroup>
-
-    <!--
-      Run the Arcade signing project. Carry over some specific properties for Signing.props: the
-      signing project project doesn't import the heavyweight Directory.Build.props/targets.
-    -->
-    <MSBuild
-      Projects="$(ArcadeSdkSignProject)"
-      Targets="Sign"
-      Properties="
-        $(MSBuildProjectName)=true;
-        BaseOutputRootPath=$(BaseOutputRootPath);
-        CrossGenRootPath=$(CrossGenRootPath);
-        ArtifactsBinDir=$(ArtifactsBinDir);
-        ArtifactsPackagesDir=$(ArtifactsPackagesDir);
-        TargetOS=$(TargetOS);
-        TargetsLinux=$(TargetsLinux);
-        TargetsWindows=$(TargetsWindows);
-        TargetArchitecture=$(TargetArchitecture);
-        BuildArchitecture=$(BuildArchitecture);
-        NetCoreAppCurrent=$(NetCoreAppCurrent)" />
-
-    <PropertyGroup>
-      <SignDuration>$([System.DateTime]::UtcNow.Subtract($([System.DateTime]::Parse('$(SignStartTime)'))))</SignDuration>
-    </PropertyGroup>
-
-    <Message Importance="High" Text="$(MSBuildProjectName) -> completed in $(SignDuration)" />
-  </Target>
-
-  <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.targets, $(MSBuildThisFileDirectory)..))" />
-
-  <!-- If signing is enabled, wait until all projects in this stage are done and sign them. -->
-  <Target Name="Build"
-          Condition="
-            '$(SkipSigning)' != 'true' and
-            '$(TargetOS)' == 'windows'"
-          DependsOnTargets="
-            EnsureProjectsBuilt;
-            RunArcadeSigning" />
-
-</Project>
diff --git a/src/installer/signing/SignBinaries.proj b/src/installer/signing/SignBinaries.proj
deleted file mode 100644
index 8b1f6811f442f4..00000000000000
--- a/src/installer/signing/SignBinaries.proj
+++ /dev/null
@@ -1,7 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <ItemGroup>
-    <StageProject Include="@(ProjectToBuild -> WithMetadataValue('SignPhase', 'Binaries'))" />
-  </ItemGroup>
-
-</Project>
diff --git a/src/installer/signing/SignBurnBundleFiles.proj b/src/installer/signing/SignBurnBundleFiles.proj
deleted file mode 100644
index 55c7a8c5810de0..00000000000000
--- a/src/installer/signing/SignBurnBundleFiles.proj
+++ /dev/null
@@ -1,11 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <!-- Before signing the bundles, the engines need to be injected back into the bundles. -->
-  <Target Name="ReattachAllEnginesToBundles"
-          BeforeTargets="RunArcadeSigning">
-    <MSBuild
-      Projects="@(ProjectToBuild -> WithMetadataValue('SignPhase', 'BundleInstallerFiles'))"
-      Targets="ReattachEngineToBundle" />
-  </Target>
-
-</Project>
diff --git a/src/installer/signing/SignBurnEngineFiles.proj b/src/installer/signing/SignBurnEngineFiles.proj
deleted file mode 100644
index 382eb202318fb5..00000000000000
--- a/src/installer/signing/SignBurnEngineFiles.proj
+++ /dev/null
@@ -1,13 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <ItemGroup>
-    <StageProject Include="@(ProjectToBuild -> WithMetadataValue('SignPhase', 'BundleInstallerFiles'))" />
-  </ItemGroup>
-
-  <!-- To sign the burn engines, they need to be extracted from the bundles using WiX tools. -->
-  <Target Name="ExtractAllEngineBundles"
-          BeforeTargets="RunArcadeSigning">
-    <MSBuild Projects="@(StageProject)" Targets="ExtractEngineBundle" />
-  </Target>
-
-</Project>
diff --git a/src/installer/signing/SignFinalPackages.proj b/src/installer/signing/SignFinalPackages.proj
deleted file mode 100644
index 35e3d8428b7cfc..00000000000000
--- a/src/installer/signing/SignFinalPackages.proj
+++ /dev/null
@@ -1,2 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-</Project>
diff --git a/src/installer/signing/SignMsiFiles.proj b/src/installer/signing/SignMsiFiles.proj
deleted file mode 100644
index 55dd18dca67327..00000000000000
--- a/src/installer/signing/SignMsiFiles.proj
+++ /dev/null
@@ -1,19 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <ItemGroup>
-    <StageProject Include="@(ProjectToBuild -> WithMetadataValue('SignPhase', 'MsiFiles'))" />
-  </ItemGroup>
-
-  <!--
-    Add shared framework projects to the list to ensure is built. Done in a target because the sfx
-    projects are not available statically.
-  -->
-  <Target Name="EnsureSharedFrameworkProjectsBuilt"
-          DependsOnTargets="GetSharedFrameworkProjects"
-          BeforeTargets="EnsureProjectsBuilt">
-    <ItemGroup>
-      <StageProject Include="@(SharedFrameworkProject)" />
-    </ItemGroup>
-  </Target>
-
-</Project>
diff --git a/src/installer/signing/SignR2RBinaries.proj b/src/installer/signing/SignR2RBinaries.proj
deleted file mode 100644
index f2f60ef725faac..00000000000000
--- a/src/installer/signing/SignR2RBinaries.proj
+++ /dev/null
@@ -1,7 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <ItemGroup>
-    <StageProject Include="@(ProjectToBuild -> WithMetadataValue('SignPhase', 'R2RBinaries'))" />
-  </ItemGroup>
-
-</Project>