diff --git a/.github/workflows/build_centos7.yml b/.github/workflows/build_centos7.yml
index 393a1c96e..3f3bd7b11 100644
--- a/.github/workflows/build_centos7.yml
+++ b/.github/workflows/build_centos7.yml
@@ -182,7 +182,6 @@ jobs:
                  -DCMAKE_INSTALL_PREFIX=_install \
                  -DBUILD_UI=ON \
                  -DXPRESS=${{ env.XPRESS_VALUE }} \
-                 -DXPRESS_ROOT=${{ env.XPRESSDIR }} \
                  -DALLOW_RUN_AS_ROOT=ON \
                  -DCMAKE_TOOLCHAIN_FILE=vcpkg/scripts/buildsystems/vcpkg.cmake
 
diff --git a/.github/workflows/build_oracle8.yml b/.github/workflows/build_oracle8.yml
index 3cd3339b0..b9f6f2147 100644
--- a/.github/workflows/build_oracle8.yml
+++ b/.github/workflows/build_oracle8.yml
@@ -133,7 +133,6 @@ jobs:
                  -DCMAKE_INSTALL_PREFIX=_install \
                  -DBUILD_UI=OFF \
                  -DXPRESS=${{ env.XPRESS_VALUE }} \
-                 -DXPRESS_ROOT=${{ env.XPRESSDIR }} \
                  -DALLOW_RUN_AS_ROOT=ON \
                  -DCMAKE_TOOLCHAIN_FILE=vcpkg/scripts/buildsystems/vcpkg.cmake
 
diff --git a/.github/workflows/build_ubuntu.yml b/.github/workflows/build_ubuntu.yml
index 918319f75..5c86a7edd 100644
--- a/.github/workflows/build_ubuntu.yml
+++ b/.github/workflows/build_ubuntu.yml
@@ -139,7 +139,6 @@ jobs:
                 -DCMAKE_INSTALL_PREFIX=_install \
                 -DBUILD_UI=ON  \
                 -DXPRESS=${{ env.XPRESS_VALUE }} \
-                -DXPRESS_ROOT=${{ env.XPRESSDIR }} \
                 -DCMAKE_TOOLCHAIN_FILE=vcpkg/scripts/buildsystems/vcpkg.cmake
 
       - name: Build
diff --git a/.github/workflows/build_windows.yml b/.github/workflows/build_windows.yml
index b8277b5ff..a41422727 100644
--- a/.github/workflows/build_windows.yml
+++ b/.github/workflows/build_windows.yml
@@ -136,7 +136,7 @@ jobs:
       - name: Configure
         run: |
           $pwd=Get-Location
-          cmake -B _build -S .  -DDEPS_INSTALL_DIR=rte-antares-deps-Release -DCMAKE_PREFIX_PATH="$pwd\rte-antares-${{steps.antares-version.outputs.result}}-installer-64bits"  -DBUILD_TESTING=ON  -DCMAKE_BUILD_TYPE=Release  -DCMAKE_TOOLCHAIN_FILE="${{env.VCPKG_ROOT}}/scripts/buildsystems/vcpkg.cmake"  -DVCPKG_TARGET_TRIPLET=${{ matrix.triplet }}  -DCMAKE_INSTALL_PREFIX=_install  -DBUILD_UI=ON  -DXPRESS=${{ env.XPRESS_VALUE }}  -DXPRESS_ROOT="${{ env.XPRESSDIR }}"
+          cmake -B _build -S .  -DDEPS_INSTALL_DIR=rte-antares-deps-Release -DCMAKE_PREFIX_PATH="$pwd\rte-antares-${{steps.antares-version.outputs.result}}-installer-64bits"  -DBUILD_TESTING=ON  -DCMAKE_BUILD_TYPE=Release  -DCMAKE_TOOLCHAIN_FILE="${{env.VCPKG_ROOT}}/scripts/buildsystems/vcpkg.cmake"  -DVCPKG_TARGET_TRIPLET=${{ matrix.triplet }}  -DCMAKE_INSTALL_PREFIX=_install  -DBUILD_UI=ON  -DXPRESS=${{ env.XPRESS_VALUE }}
       - name: Build
         run: |
           cmake --build _build --config Release -j4
diff --git a/.github/workflows/centos-release.yml b/.github/workflows/centos-release.yml
index 4daafb134..b77285b99 100644
--- a/.github/workflows/centos-release.yml
+++ b/.github/workflows/centos-release.yml
@@ -222,7 +222,6 @@ jobs:
                  -DBUILD_UI=ON \
                  -DUSER_GUIDE_PATH="docs/${{ needs.userguide.outputs.pdf-name }}" \
                  -DXPRESS=${XPRESS_VALUE} \
-                 -DXPRESS_ROOT=${XPRESSDIR} \
                  -DALLOW_RUN_AS_ROOT=ON \
                  -DCMAKE_TOOLCHAIN_FILE=vcpkg/scripts/buildsystems/vcpkg.cmake
 
diff --git a/.github/workflows/ol8-release.yml b/.github/workflows/ol8-release.yml
index 15423c63d..0d3be3772 100644
--- a/.github/workflows/ol8-release.yml
+++ b/.github/workflows/ol8-release.yml
@@ -185,7 +185,6 @@ jobs:
                  -DBUILD_UI=ON \
                  -DUSER_GUIDE_PATH="docs/${{ needs.userguide.outputs.pdf-name }}" \
                  -DXPRESS=${XPRESS_VALUE} \
-                 -DXPRESS_ROOT=${XPRESSDIR} \
                  -DALLOW_RUN_AS_ROOT=ON \
                  -DCMAKE_TOOLCHAIN_FILE=vcpkg/scripts/buildsystems/vcpkg.cmake
 
diff --git a/.github/workflows/ubuntu-release.yml b/.github/workflows/ubuntu-release.yml
index 1d7c317f5..23f627677 100644
--- a/.github/workflows/ubuntu-release.yml
+++ b/.github/workflows/ubuntu-release.yml
@@ -179,7 +179,6 @@ jobs:
                 -DBUILD_UI=ON  \
                 -DUSER_GUIDE_PATH="docs/${{ needs.userguide.outputs.pdf-name }}" \
                 -DXPRESS=${{ env.XPRESS_VALUE }} \
-                -DXPRESS_ROOT=${{ env.XPRESSDIR }} \
                 -DCMAKE_TOOLCHAIN_FILE=vcpkg/scripts/buildsystems/vcpkg.cmake
 
       - name: Build
diff --git a/.github/workflows/windows-vcpkg.yml b/.github/workflows/windows-vcpkg.yml
index 5d5ec4f9b..3a1416c87 100644
--- a/.github/workflows/windows-vcpkg.yml
+++ b/.github/workflows/windows-vcpkg.yml
@@ -188,7 +188,7 @@ jobs:
         #Inverted ternary : @({'condition is false'},{'condition is true'})[$condition] => ({true}, {false})[!$condition]
         run: |
           $pwd=Get-Location
-          cmake -B _build -S . -DDEPS_INSTALL_DIR=rte-antares-deps-Release -DCMAKE_PREFIX_PATH="$pwd\rte-antares-${{steps.antares-version.outputs.result}}-installer-64bits" -DBUILD_TESTING=ON -DCMAKE_BUILD_TYPE=Release  -DCMAKE_TOOLCHAIN_FILE="${{env.VCPKG_ROOT}}/scripts/buildsystems/vcpkg.cmake" -DVCPKG_TARGET_TRIPLET=${{ matrix.triplet }} -DCMAKE_INSTALL_PREFIX=_install -DBUILD_UI=ON -DUSER_GUIDE_PATH="docs/${{ needs.userguide.outputs.pdf-name }}" -DXPRESS=${{ env.XPRESS_VALUE }} -DXPRESS_ROOT="${{ env.XPRESSDIR }}"
+          cmake -B _build -S . -DDEPS_INSTALL_DIR=rte-antares-deps-Release -DCMAKE_PREFIX_PATH="$pwd\rte-antares-${{steps.antares-version.outputs.result}}-installer-64bits" -DBUILD_TESTING=ON -DCMAKE_BUILD_TYPE=Release  -DCMAKE_TOOLCHAIN_FILE="${{env.VCPKG_ROOT}}/scripts/buildsystems/vcpkg.cmake" -DVCPKG_TARGET_TRIPLET=${{ matrix.triplet }} -DCMAKE_INSTALL_PREFIX=_install -DBUILD_UI=ON -DUSER_GUIDE_PATH="docs/${{ needs.userguide.outputs.pdf-name }}" -DXPRESS=${{ env.XPRESS_VALUE }}
 
       - name: Build
         run: |