diff --git a/azure-pipelines-pr.yml b/azure-pipelines-pr.yml
index dd5467715e7..c916de40cb2 100644
--- a/azure-pipelines-pr.yml
+++ b/azure-pipelines-pr.yml
@@ -81,6 +81,7 @@ stages:
           matrix:
             Build_Release:
               _BuildConfig: Release
+              _ExtraBuildArgs: ''
               # PRs or external builds are not signed.
               ${{ if or(eq(variables['System.TeamProject'], 'public'), in(variables['Build.Reason'], 'PullRequest')) }}:
                 _SignType: test
@@ -90,6 +91,8 @@ stages:
               Build_Debug:
                 _BuildConfig: Debug
                 _SignType: test
+                # Only Windows Release publishes to the shared artifact containers.
+                _ExtraBuildArgs: '/p:Publish=false'
 
         steps:
         - checkout: self
@@ -101,6 +104,7 @@ stages:
             -prepareMachine
             -integrationTest
             $(_InternalBuildArgs)
+            $(_ExtraBuildArgs)
           displayName: Windows Build / Publish
 
       - ${{ if or(eq(variables['System.TeamProject'], 'public'), in(variables['Build.Reason'], 'PullRequest')) }}:
@@ -120,6 +124,7 @@ stages:
               --configuration $(_BuildConfig)
               --prepareMachine
               --integrationTest
+              /p:Publish=false
             name: Build
             displayName: Build
 
@@ -144,6 +149,7 @@ stages:
               --configuration $(_BuildConfig)
               --prepareMachine
               --integrationTest
+              /p:Publish=false
             name: Build
             displayName: Build
             condition: succeeded()
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index ac52456adad..90b19218f8c 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -106,6 +106,11 @@ extends:
                 os: windows
               variables:
               - _BuildConfig: ${{ config.buildConfig }}
+              # Only Windows Release publishes packages to avoid concurrent uploads
+              # to the shared PackageArtifacts/BlobArtifacts containers.
+              - _ExtraBuildArgs: ''
+              - ${{ if ne(config.buildConfig, 'Release') }}:
+                - _ExtraBuildArgs: '/p:Publish=false'
               - _SignType: test
               - ${{ if notin(variables['Build.Reason'], 'PullRequest') }}:
                 - _SignType: real
@@ -125,6 +130,7 @@ extends:
                     -prepareMachine
                     -integrationTest
                     $(_InternalBuildArgs)
+                    $(_ExtraBuildArgs)
                   displayName: Windows Build / Publish
               - ${{ else }}:
                 - script: eng/common/cibuild.cmd
@@ -132,6 +138,7 @@ extends:
                     -prepareMachine
                     /p:Test=false
                     $(_InternalBuildArgs)
+                    $(_ExtraBuildArgs)
                   displayName: Windows Build / Publish
 
           - ${{ if in(variables['Build.Reason'], 'PullRequest') }}:
@@ -149,6 +156,7 @@ extends:
                     --configuration $(_BuildConfig)
                     --prepareMachine
                     --integrationTest
+                    /p:Publish=false
                   name: Build
                   displayName: Build
 
@@ -174,6 +182,7 @@ extends:
                     --configuration $(_BuildConfig)
                     --prepareMachine
                     --integrationTest
+                    /p:Publish=false
                   name: Build
                   displayName: Build
                   condition: succeeded()