diff --git a/.ci/update_windows/update.py b/.ci/update_windows/update.py
index 51a263203..62d7019b8 100755
--- a/.ci/update_windows/update.py
+++ b/.ci/update_windows/update.py
@@ -113,7 +113,8 @@ cur_path = os.path.dirname(update_py_path)
 
 req_path = os.path.join(cur_path, "current_requirements.txt")
 repo_req_path = os.path.join(repo_path, "requirements.txt")
-
+win_only_req_path = os.path.join(cur_path, "current_win_only_requirements.txt")
+win_only_repo_req_path = os.path.join(repo_path, "win_only_requirements.txt")
 
 def files_equal(file1, file2):
     try:
@@ -140,6 +141,14 @@ if not os.path.exists(req_path) or not files_equal(repo_req_path, req_path):
     except:
         pass
 
+# TODO: Delete this once ComfyUI manager fully supports '; sys_platform == "win32"' syntax
+if not os.path.exists(win_only_req_path) or not files_equal(win_only_repo_req_path, win_only_req_path):
+    import subprocess
+    try:
+        subprocess.check_call([sys.executable, '-s', '-m', 'pip', 'install', '-r', win_only_repo_req_path])
+        shutil.copy(win_only_repo_req_path, win_only_req_path)
+    except:
+        pass
 
 stable_update_script = os.path.join(repo_path, ".ci/update_windows/update_comfyui_stable.bat")
 stable_update_script_to = os.path.join(cur_path, "update_comfyui_stable.bat")
diff --git a/.ci/windows_base_files/run_nvidia_gpu_sandboxed.bat b/.ci/windows_base_files/run_nvidia_gpu_sandboxed.bat
new file mode 100644
index 000000000..a61f4a204
--- /dev/null
+++ b/.ci/windows_base_files/run_nvidia_gpu_sandboxed.bat
@@ -0,0 +1,3 @@
+
+.\python_embeded\python.exe -s ComfyUI\main.py --windows-standalone-build --enable-sandbox
+pause
diff --git a/requirements.txt b/requirements.txt
index c3ea016c9..94dafea58 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,6 +28,3 @@ soundfile
 av>=14.2.0
 pydantic~=2.0
 pydantic-settings~=2.0
-
-# Windows only dependencies:
-pywin32 ; sys_platform == "win32"
diff --git a/win_only_requirements.txt b/win_only_requirements.txt
new file mode 100644
index 000000000..883d7776f
--- /dev/null
+++ b/win_only_requirements.txt
@@ -0,0 +1,2 @@
+# Needed to implement the windows sandbox
+pywin32 ; sys_platform == "win32"