diff --git a/.github/workflows/build-multiplatform.yml b/.github/workflows/build-multiplatform.yml
index ef13885..1abc453 100644
--- a/.github/workflows/build-multiplatform.yml
+++ b/.github/workflows/build-multiplatform.yml
@@ -31,12 +31,27 @@ jobs:
           pip install -r requirements.txt
       - name: Build engine and bootstrapper
         run: |
-          python build.py
+          python build.py --no-zip
+      - name: Decode PFX certificate
+        run: |
+          echo "${{ secrets.CODESIGN_PFX }}" | Out-File -Encoding ascii -FilePath cert_base64.txt
+          certutil -decode cert_base64.txt cert.pfx
+        shell: pwsh
+      - name: Sign engine.exe y bootstrapper.exe
+        run: |
+          & "C:\Program Files (x86)\Windows Kits\10\bin\10.0.19041.0\x64\signtool.exe" sign /f cert.pfx /p "${{ secrets.VNE_KEY }}" /tr http://timestamp.digicert.com /td sha256 /fd sha256 dist/engine.exe
+          & "C:\Program Files (x86)\Windows Kits\10\bin\10.0.19041.0\x64\signtool.exe" sign /f cert.pfx /p "${{ secrets.VNE_KEY }}" /tr http://timestamp.digicert.com /td sha256 /fd sha256 dist/lib/bootstrapper.exe
+        shell: pwsh
       - name: Upload Artifacts
         uses: actions/upload-artifact@v4
         with:
           name: dist-windows
-          path: dist/vne-win.zip
+          path: dist
+      - name: delete cert files
+        run: |
+          del cert.pfx
+          del cert_base64.txt
+        shell: pwsh
 
   build-linux:
     runs-on: ubuntu-22.04
@@ -59,11 +74,12 @@ jobs:
       - name: Build engine and bootstrapper
         run: |
           python build.py
+        # incluye el firmado aqui de engine.exe y /lib/bootstrapper.exe
       - name: Upload Artifacts
         uses: actions/upload-artifact@v4
         with:
           name: dist-linux
-          path: dist/vne-linux.zip
+          path: dist
   
   # Temporarily disabled
   # build-mac:
diff --git a/build.py b/build.py
index afa04ef..12be683 100644
--- a/build.py
+++ b/build.py
@@ -64,6 +64,12 @@ def so_name():
         sys.exit(1)
 
 def build_engine():
+    no_zip = False
+    for arg in sys.argv[1:]:
+        if arg == "--no-zip":
+            no_zip = True
+            break
+    
     # Verify that main.py exists in the current directory.
     if not os.path.exists("main.py"):
         print("[build.py] Error: main.py was not found in the current directory.")
@@ -87,18 +93,21 @@ def build_engine():
         subprocess.check_call(doc)
         print("[build.py] The documentation was correctly constructed")
         
-        if platform.system() == "Windows":
-            print("[build.py] Zipping the engine and documentation...")
-            zip_folders_and_files(['./dist/lib', './dist/docs'], ['./dist/engine.exe'], f'./dist/vne-win.zip')
-        elif platform.system() == "Linux":
-            print("[build.py] Zipping the engine and documentation for Linux...")
-            zip_folders_and_files(['./dist/lib', './dist/docs'], ['./dist/engine'], f'./dist/vne-linux.zip')
-        elif platform.system() == "Darwin":
-            print("[build.py] Zipping the engine and documentation for macOS...")
-            zip_folders_and_files(['./dist/lib', './dist/docs'], ['./dist/engine'], f'./dist/vne-darwin.zip')
+        if not no_zip:
+            if platform.system() == "Windows":
+                print("[build.py] Zipping the engine and documentation...")
+                zip_folders_and_files(['./dist/lib', './dist/docs'], ['./dist/engine.exe'], f'./dist/vne-win.zip')
+            elif platform.system() == "Linux":
+                print("[build.py] Zipping the engine and documentation for Linux...")
+                zip_folders_and_files(['./dist/lib', './dist/docs'], ['./dist/engine'], f'./dist/vne-linux.zip')
+            elif platform.system() == "Darwin":
+                print("[build.py] Zipping the engine and documentation for macOS...")
+                zip_folders_and_files(['./dist/lib', './dist/docs'], ['./dist/engine'], f'./dist/vne-darwin.zip')
+            else:
+                print(f"[build.py] Error: Unsupported platform '{platform.system()}'. Cannot zip engine and documentation.")
+                sys.exit(1)
         else:
-            print(f"[build.py] Error: Unsupported platform '{platform.system()}'. Cannot zip engine and documentation.")
-            sys.exit(1)
+            print("[build.py] Skipping zipping of engine and documentation as per --no-zip flag.")
     except subprocess.CalledProcessError as e:
         print(f"[build.py] Error during compilation: {e}")
         sys.exit(1)