diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 2f568f36..6f3a01c4 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -70,7 +70,7 @@ jobs:
         os: [ windows-latest]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v2
 
       - name: install mamba
         uses: mamba-org/provision-with-micromamba@main
@@ -84,17 +84,20 @@ jobs:
           micromamba shell hook -s cmd.exe -p C:\Users\runneradmin\micromamba-root
 
       - name: cmake configure
-        shell: powershell
+        shell: cmd
         run: |
+          call C:\Users\runneradmin\micromamba-root\condabin\micromamba.bat activate xeus-cpp
           mkdir -p bld
           cd bld
-          cmake .. -DCMAKE_BUILD_TYPE=Release  -DDEPENDENCY_SEARCH_PREFIX="%CONDA_PREFIX%\Library" -DCMAKE_PREFIX_PATH="%CONDA_PREFIX%\Library" -DCMAKE_INSTALL_PREFIX="%CONDA_PREFIX%"
+          cmake .. -G "NMake Makefiles" -DCMAKE_BUILD_TYPE=Release -DXEUS_BUILD_TESTS=ON -DDEPENDENCY_SEARCH_PREFIX="%CONDA_PREFIX%\Library" -DCMAKE_PREFIX_PATH="%CONDA_PREFIX%\Library" -DCMAKE_INSTALL_PREFIX="%CONDA_PREFIX%"
 
       - name: build
-        shell: powershell
+        shell: cmd
         run: |
+          call C:\Users\runneradmin\micromamba-root\condabin\micromamba.bat activate xeus-cpp
           cd bld
-          cmake --build . --config Release --target ALL_BUILD
+          set CL=/MP
+          nmake install
 
       - name: test
         shell: cmd
@@ -103,61 +106,6 @@ jobs:
           cd test
           pytest .  --reruns 5
 
-  # win:
-
-  #   runs-on: ${{ matrix.os }}
-
-  #   strategy:
-  #     fail-fast: false
-  #     matrix:
-  #       os: [ windows-latest]
-
-  #   steps:
-  #     - uses: actions/checkout@v2
-
-  #     - name: install mamba
-  #       uses: mamba-org/provision-with-micromamba@main
-  #       with:
-  #         environment-file: environment-dev.yml
-  #         environment-name: xeus-cpp
-
-  #     - name: micromamba shell hook
-  #       shell: powershell
-  #       run: |
-  #         micromamba shell hook -s cmd.exe -p C:\Users\runneradmin\micromamba-root
-
-  #     - name: Make build directory
-  #       run: mkdir build
-
-  #     - name: cmake configure
-  #       shell: cmd
-  #       run: |
-  #         call C:\Users\runneradmin\micromamba-root\condabin\micromamba.bat activate xeus-cpp
-  #         cmake .. ^
-  #           -GNinja ^
-  #           -DCMAKE_BUILD_TYPE=Release ^
-  #           -DXEUS_BUILD_TESTS=ON ^
-  #           -DDEPENDENCY_SEARCH_PREFIX="%CONDA_PREFIX%\Library" ^
-  #           -DCMAKE_PREFIX_PATH="%CONDA_PREFIX%\Library" ^
-  #           -DCMAKE_INSTALL_PREFIX="%CONDA_PREFIX%"
-  #       working-directory: build
-
-  #     - name: build
-  #       shell: cmd
-  #       run: |
-  #         call C:\Users\runneradmin\micromamba-root\condabin\micromamba.bat activate xeus-cpp
-  #         cd bld
-  #         set CL=/MP
-  #         ninja install
-  #       working-directory: build
-
-  #     - name: test
-  #       shell: cmd
-  #       run: |
-  #         call C:\Users\runneradmin\micromamba-root\condabin\micromamba.bat activate xeus-cpp
-  #         cd test
-  #         pytest .  --reruns 5
-
   emscripten_wasm:
 
     runs-on: ubuntu-latest