diff --git a/.github/workflows/build-macos.yml b/.github/workflows/build-macos.yml
index a644af4064..8d471eb3f9 100644
--- a/.github/workflows/build-macos.yml
+++ b/.github/workflows/build-macos.yml
@@ -1,10 +1,7 @@
 name: Build macOS
 
-on:  
-  push:
-  pull_request:
-    branches:
-      - master
+on:
+  workflow_dispatch:
 
 jobs:
   build-macos:
diff --git a/.github/workflows/build-ubuntu.yml b/.github/workflows/build-ubuntu.yml
index 7c7c1683a9..5f0d6bf1ee 100644
--- a/.github/workflows/build-ubuntu.yml
+++ b/.github/workflows/build-ubuntu.yml
@@ -170,7 +170,17 @@ jobs:
       if: ${{ always() && steps.cmake-configure.outcome == 'success' }}
 
     - name: Run Tests
-      run: ctest -V --test-dir _build
+      run: |
+        mkdir -p "${{ github.workspace }}/_build/test-results"
+        ctest -V --test-dir _build --output-junit "${{ github.workspace }}/_build/test-results/test-results-${{ matrix.os }}.xml"
+
+    - name: Upload JUnit XML
+      if: always()
+      uses: actions/upload-artifact@v7
+      with:
+        name: 'test-results-${{ matrix.os }}'
+        path: ${{ github.workspace }}/_build/test-results/test-results-${{ matrix.os }}.xml
+        if-no-files-found: warn
 
     - name: CPack
       run: cpack -G DEB -R '${{ env.DEB_VERSION }}' --config _build/CPackConfig.cmake
@@ -194,6 +204,21 @@ jobs:
         path: ${{ github.workspace }}/_build/lib/*
         
     #---------------------------------------------------------------------------------------------------
+
+  report-ubuntu-tests:
+    needs: [build-ubuntu]
+    if: always()
+    permissions:
+      contents: read
+      pull-requests: write
+    uses: YannikSpaeth/ci-failure-summary-workflow/.github/workflows/ci-failure-summary.yml@main
+    with:
+      artifact_name: 'test-results-*'
+      pr_number: ${{ github.event.pull_request.number }}
+      sha: ${{ github.sha }}
+    secrets: inherit
+
+    #---------------------------------------------------------------------------------------------------
     
   run-benchmarks:
     if: github.repository == 'eclipse-ecal/ecal' && github.ref_name == 'master'
diff --git a/.github/workflows/build-windows.yml b/.github/workflows/build-windows.yml
index 88ccc74afb..73f4db8834 100644
--- a/.github/workflows/build-windows.yml
+++ b/.github/workflows/build-windows.yml
@@ -1,10 +1,7 @@
 name: Build Windows
 
 on:
-  push:
-  pull_request:
-    branches:
-      - master
+  workflow_dispatch:
 env:
   IS_JENKINS_SIGNING_ALLOWED: true
 
@@ -200,13 +197,25 @@ jobs:
       run: cmake --build "${{ runner.workspace }}/_build/csharp" --config Release
       shell: cmd
 
+    - name: Ensure JUnit output directory exists
+      run: mkdir "${{ runner.workspace }}\_build\test-results"
+      shell: cmd
+
     - name: Run C# Tests
-      run: ctest -C Release -V --test-dir "${{ runner.workspace }}/_build/csharp"
+      run: ctest -C Release -V --test-dir "${{ runner.workspace }}/_build/csharp" --output-junit "${{ runner.workspace }}/_build/test-results/test-results-csharp.xml"
 
     - name: Run Tests
-      run: ctest -C Release -V
+      run: ctest -C Release -V --output-junit "${{ runner.workspace }}/_build/test-results/test-results-windows.xml"
       working-directory: ${{ runner.workspace }}/_build/complete
 
+    - name: Upload JUnit XML
+      if: always()
+      uses: actions/upload-artifact@v7
+      with:
+        name: test-results-windows
+        path: ${{ runner.workspace }}/_build/test-results/*.xml
+        if-no-files-found: warn
+
     - name: Pack SDK
       run: cpack -C Debug
       working-directory: ${{ runner.workspace }}/_build/sdk
@@ -263,7 +272,22 @@ jobs:
         path: ${{ runner.workspace }}/_build/complete/bin/*.dll
 
     # --------------------------------------------------------------------------------------------------
-    
+
+  report-windows-tests:
+    needs: [build-windows]
+    if: always()
+    permissions:
+      contents: read
+      pull-requests: write
+    uses: YannikSpaeth/ecal-ci-pipeline-improvements/.github/workflows/ci-failure-summary.yml@main
+    with:
+      artifact_name: test-results-*
+      pr_number: ${{ github.event.pull_request.number }}
+      sha: ${{ github.sha }}
+    secrets: inherit
+
+    # --------------------------------------------------------------------------------------------------
+
   run-benchmarks:
     if: github.repository == 'eclipse-ecal/ecal' && github.ref_name == 'master'
     runs-on: windows-2022
diff --git a/.github/workflows/build_wheels.yml b/.github/workflows/build_wheels.yml
index 107c914c8e..c506a18c77 100644
--- a/.github/workflows/build_wheels.yml
+++ b/.github/workflows/build_wheels.yml
@@ -1,8 +1,6 @@
 name: Build Wheels
 
 on:
-  push:
-  pull_request:
   workflow_dispatch:
 
 jobs:
diff --git a/ecal/tests/cpp/core_test/src/core_test.cpp b/ecal/tests/cpp/core_test/src/core_test.cpp
index 16ee909392..7e2e73debb 100644
--- a/ecal/tests/cpp/core_test/src/core_test.cpp
+++ b/ecal/tests/cpp/core_test/src/core_test.cpp
@@ -112,6 +112,21 @@ TEST(core_cpp_core, eCAL_Ok)
   EXPECT_EQ(false, eCAL::Ok());
 }
 
+TEST(core_cpp_core, IntentionalFailure_One)
+{
+  EXPECT_EQ(1, 2) << "Intentional CI failure #1 for summary validation";
+}
+
+TEST(core_cpp_core, IntentionalFailure_Two)
+{
+  EXPECT_TRUE(false) << "Intentional CI failure #2 for summary validation";
+}
+
+TEST(core_cpp_core, IntentionalFailure_Three)
+{
+  EXPECT_STREQ("expected", "actual") << "Intentional CI failure #3 for summary validation";
+}
+
 /* excluded for now, system timer jitter too high */
 #if 0
 namespace