diff --git a/graphqler/utils/stats.py b/graphqler/utils/stats.py
index c86db7b..a1f0864 100644
--- a/graphqler/utils/stats.py
+++ b/graphqler/utils/stats.py
@@ -11,6 +11,8 @@
 
 from .file_utils import initialize_file, intialize_file_if_not_exists, recreate_path, get_or_create_file
 from .singleton import singleton
+import os
+import re
 
 
 @singleton
@@ -261,6 +263,9 @@ def save_endpoint_results(self):
         for node_name, results in self.results.items():
             # If the node name has slashes, replace them with underscores
             node_name = node_name.replace("/", "_")
+            if os.name == "nt":
+                # Replace characters that are invalid in Windows filenames
+                node_name = re.sub(r'[\\/:*?"<>|]', "_", name)
             for result in results:
                 result_type = "success" if result.success else "failure"
                 result_file_path = Path(self.endpoint_results_dir) / node_name / result_type / f"{result.status_code}"
diff --git a/tests/integration/test_food_delivery_api.py b/tests/integration/test_food_delivery_api.py
index 0be25ad..6181b14 100644
--- a/tests/integration/test_food_delivery_api.py
+++ b/tests/integration/test_food_delivery_api.py
@@ -4,7 +4,7 @@
 from tests.integration.utils.stats import get_percent_query_mutation_success
 from tests.integration.utils.run_api import run_node_project, wait_for_server
 import os
-
+import shutil
 
 class TestFoodDeliveryAPI(unittest.TestCase):
     PORT = 4000
@@ -18,7 +18,8 @@ class TestFoodDeliveryAPI(unittest.TestCase):
     @classmethod
     def setUpClass(cls):
         # Start the GrapQL server
-        cls.process = run_node_project(cls.API_PATH, ["node dbinitializer.js"], str(cls.PORT))
+        node_cmd = shutil.which("node")
+        cls.process = run_node_project(cls.API_PATH, [f"{node_cmd} dbinitializer.js"], str(cls.PORT))
         cls.process_pid = cls.process.pid
 
         # Parse the config
@@ -33,7 +34,8 @@ def tearDownClass(cls):
         if cls.process and cls.process.pid == cls.process_pid:
             cls.process.kill()
             cls.process.wait()
-        os.system(f"rm -rf {cls.PATH}")
+        if os.path.exists(cls.PATH):
+            shutil.rmtree(cls.PATH)
 
     def test_run_compile_mode_generates_valid_introspection_file(self):
         __main__.run_compile_mode(self.PATH, self.URL)
diff --git a/tests/integration/test_user_wallet_api.py b/tests/integration/test_user_wallet_api.py
index cc28a0a..22a6188 100644
--- a/tests/integration/test_user_wallet_api.py
+++ b/tests/integration/test_user_wallet_api.py
@@ -4,6 +4,8 @@
 from tests.integration.utils.stats import get_percent_query_mutation_success
 from tests.integration.utils.run_api import run_node_project, wait_for_server
 import os
+import shutil
+
 
 
 class TestUserWalletApi(unittest.TestCase):
@@ -33,7 +35,11 @@ def tearDownClass(cls):
         if cls.process and cls.process.pid == cls.process_pid:
             cls.process.kill()
             cls.process.wait()
-        os.system(f"rm -rf {cls.PATH}")
+        if os.path.exists(cls.PATH):
+            try:
+                shutil.rmtree(cls.PATH)
+            except Exception as e:
+                pass
 
     def test_run_compile_mode_generates_valid_introspection_file(self):
         print(self.PATH, self.URL)
diff --git a/tests/integration/utils/run_api.py b/tests/integration/utils/run_api.py
index 6d38772..061d3e4 100644
--- a/tests/integration/utils/run_api.py
+++ b/tests/integration/utils/run_api.py
@@ -2,6 +2,7 @@
 import os
 import requests
 import time
+import shutil
 
 
 def run_node_project(path: str, commands: list[str], port: str) -> subprocess.Popen:
@@ -18,16 +19,26 @@ def run_node_project(path: str, commands: list[str], port: str) -> subprocess.Po
     # Set the environment variable
     env = os.environ.copy()
     env["PORT"] = port
+    shell_flag = os.name == "nt"  # True no Windows, False no Linux/macOS
 
-    # Run npm install
-    subprocess.run(["npm", "install"], cwd=path, check=True, env=env)
+    # Run npm install with proper handling
+    npm_cmd = shutil.which("npm")
+    node_cmd = shutil.which("node")
+    if npm_cmd is None:
+        raise RuntimeError("npm command not found. Please ensure Node.js is installed.")
+    
+    try:
+        subprocess.run([npm_cmd, "install"], cwd=path, check=True, env=env, shell=shell_flag)
+    except subprocess.CalledProcessError as e:
+        print(f"npm install failed: {e}")
+        raise
 
     # Run each command in the list
     for command in commands:
-        subprocess.run(command.split(), cwd=path, check=True, env=env)
+        subprocess.run(command.split(), cwd=path, check=True, env=env, shell=shell_flag)
 
     # Run node server.js
-    process = subprocess.Popen(["node", "server.js"], cwd=path, env=env)
+    process = subprocess.Popen([node_cmd, "server.js"], cwd=path, env=env, shell=shell_flag)
 
     return process