diff --git a/.github/workflows/windows-conda-clang.yml b/.github/workflows/windows-conda-clang.yml
index 65fd3fa38f8f11d61c51a8a95eb2ba53c8977764..8f62d14415c9b7d43dad7cd4645ae35bb60ff86a 100644
--- a/.github/workflows/windows-conda-clang.yml
+++ b/.github/workflows/windows-conda-clang.yml
@@ -58,17 +58,22 @@ jobs:
           -DHPP_FCL_HAS_QHULL=ON ^
           -DBUILD_PYTHON_INTERFACE=ON ^
           ..
+        if errorlevel 1 exit 1
 
         :: Build and Install
         cmake --build . --config Release --target install
+        if errorlevel 1 exit 1
 
         :: Build stubs
         git clone https://github.com/jcarpent/pybind11-stubgen.git
         python "%CD%\pybind11-stubgen\pybind11_stubgen\__init__.py" -o %CONDA_PREFIX%\Lib\site-packages hppfcl --boost-python --ignore-invalid signature --no-setup-py --root-module-suffix ""
+        if errorlevel 1 exit 1
 
         :: Testing
         ctest --output-on-failure -C Release -V
+        if errorlevel 1 exit 1
 
         :: Test Python import
         cd ..
         python -c "import hppfcl"
+        if errorlevel 1 exit 1
diff --git a/.github/workflows/windows-conda-v142.yml b/.github/workflows/windows-conda-v142.yml
index f69f309fef53746bc4068ef4a592fe10e6c16dff..dabd125bfa4d1e3393e2b4ed34e3e32a16d3774c 100644
--- a/.github/workflows/windows-conda-v142.yml
+++ b/.github/workflows/windows-conda-v142.yml
@@ -57,18 +57,22 @@ jobs:
           -DHPP_FCL_HAS_QHULL=ON ^
           -DBUILD_PYTHON_INTERFACE=ON ^
           ..
+        if errorlevel 1 exit 1
 
         :: Build and Install
         cmake --build . --config Release --target install
-
+        if errorlevel 1 exit 1
 
         :: Build stubs
         git clone https://github.com/jcarpent/pybind11-stubgen.git
         python "%CD%\pybind11-stubgen\pybind11_stubgen\__init__.py" -o %CONDA_PREFIX%\Lib\site-packages hppfcl --boost-python --ignore-invalid signature --no-setup-py --root-module-suffix ""
+        if errorlevel 1 exit 1
 
         :: Testing
         ctest --output-on-failure -C Release -V
+        if errorlevel 1 exit 1
 
         :: Test Python import
         cd ..
         python -c "import hppfcl"
+        if errorlevel 1 exit 1