diff --git a/.github/workflows/build_wheels_windows.yml b/.github/workflows/build_wheels_windows.yml
index 3899aa46..df50680a 100644
--- a/.github/workflows/build_wheels_windows.yml
+++ b/.github/workflows/build_wheels_windows.yml
@@ -17,7 +17,7 @@ on:
 
 jobs:
   Build:
-    runs-on: windows-2025
+    runs-on: windows-2022
     strategy:
       fail-fast: false
       matrix:
@@ -65,7 +65,7 @@ jobs:
         python --version
         python -m pip install --upgrade pip
         python -m pip install --upgrade setuptools
-        python -m pip install cmake==3.24.2
+        python -m pip install cmake==4.3.2
         python -m pip install toml && python -c "import toml; c = toml.load('pyproject.toml'); print('\n'.join(c['build-system']['requires']))" >> requirements.txt | python -m pip install -r requirements.txt
         set "CI_BUILD=1" && python setup.py bdist_wheel --py-limited-api=cp37 --dist-dir=%cd%\wheelhouse -v
       shell: cmd
@@ -77,14 +77,14 @@ jobs:
 
   Test:
     needs: [Build]
-    runs-on: windows-2025
+    runs-on: windows-2022
     defaults:
       run:
         shell: cmd
     strategy:
       fail-fast: false
       matrix:
-        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12', '3.13']
+        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
         platform: [x86, x64]
         with_contrib: [0, 1]
         without_gui: [0, 1]
diff --git a/setup.py b/setup.py
index 025e1b1f..1b403760 100755
--- a/setup.py
+++ b/setup.py
@@ -147,8 +147,11 @@ def main():
     # Raw paths relative to sourcetree root.
     files_outside_package_dir = {"cv2": ["LICENSE.txt", "LICENSE-3RD-PARTY.txt"]}
 
+    # HACK: Disabled generic assembler for now.
+    # Windows 2025 CI environment does not provide suitable assembler or build is broken in OpenCV MLAS.
     ci_cmake_generator = (
-        ["-G", "Visual Studio 17 2022"]
+        ["-G", "Visual Studio 17 2022",
+         "-DCMAKE_ASM_COMPILER="]
         if os.name == "nt"
         else ["-G", "Unix Makefiles"]
     )