diff --git a/CHANGELOG.md b/CHANGELOG.md
index 495b3dd1..96904ce6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@ All notable changes to the Zowe Client Python SDK will be documented in this fil
 
 ### Bug Fixes
 
+- Fixed secure `user`/`password` properties not being loaded for team-config profiles nested more than one level deep which caused 401 errors. [#411](https://github.com/zowe/zowe-client-python-sdk/pull/411)
 - Redacted request headers and restricted log directory/file to owner-only access. [#404](https://github.com/zowe/zowe-client-python-sdk/pull/404)
 - Fixed `Jobs.get_job_output_as_files` writing to a directory it never created, and made job output paths stay within the target directory. [#403](https://github.com/zowe/zowe-client-python-sdk/pull/403)
 - Updated the `pyo3` dependency of the Secrets SDK for technical currency. [#399](https://github.com/zowe/zowe-client-python-sdk/pull/399)
diff --git a/src/core/zowe/core_for_zowe_sdk/config_file.py b/src/core/zowe/core_for_zowe_sdk/config_file.py
index 82bc14d4..ef462127 100644
--- a/src/core/zowe/core_for_zowe_sdk/config_file.py
+++ b/src/core/zowe/core_for_zowe_sdk/config_file.py
@@ -383,7 +383,7 @@ def find_profile(self, path: str, profiles: dict[str, Any]) -> Optional[dict[str
         for k, v in profiles.items():
             if not isinstance(v, dict):  # Ensure v is a dictionary
                 if not self.__suppress_config_file_warnings:
-                    self.__logger.warning("Invalid profile passed when schame validation is off")
+                    self.__logger.warning("Invalid profile passed when schema validation is off")
                 continue  # Skip invalid entries
 
             if segments[0] == k:
@@ -443,20 +443,10 @@ def __load_secure_properties(self) -> None:
         secure_props = CredentialManager.secure_props.get(self.filepath or "", {})
         for key, value in secure_props.items():
             segments = [name for i, name in enumerate(key.split(".")) if i % 2 == 1]
-            profiles_obj = self.profiles
             property_name = segments.pop()
-            for i, profile_name in enumerate(segments):
-                if profiles_obj is None or not isinstance(profiles_obj, dict):
-                    break
-                if profile_name in profiles_obj:
-                    profiles_obj = profiles_obj[profile_name]
-                    if not isinstance(profiles_obj, dict):
-                        break
-                    if i == len(segments) - 1:
-                        profiles_obj.setdefault("properties", {})
-                        profiles_obj["properties"][property_name] = value
-                else:
-                    break
+            profile = self.find_profile(".".join(segments), self.profiles)
+            if profile is not None:
+                profile.setdefault("properties", {})[property_name] = value
 
     def __extract_secure_properties(
         self, profiles_obj: dict[str, Any], json_path: Optional[str] = "profiles"
diff --git a/tests/unit/core/test_profile_manager.py b/tests/unit/core/test_profile_manager.py
index 1e797a43..9c763ce1 100644
--- a/tests/unit/core/test_profile_manager.py
+++ b/tests/unit/core/test_profile_manager.py
@@ -182,6 +182,58 @@ def test_custom_file_and_custom_profile_loading_with_nested_profile(self, get_pa
         }
         self.assertEqual(props, expected_props)
 
+    @mock.patch("zowe.secrets_for_zowe_sdk.keyring.get_password", side_effect=keyring_get_password)
+    def test_nested_profile_with_secure_properties_on_child(self, get_pass_func):
+        """
+        Test that secure properties declared on a child profile nested under a
+        parent (e.g. mainframe.zosmf) are correctly loaded from the vault.
+
+        Regression test: __load_secure_properties previously looked for the
+        child profile name as a direct key of the parent profile dict, but
+        nested profiles actually live one level deeper under the parent's
+        own "profiles" key, so secure user/password values were silently
+        never injected for any profile nested more than one level deep.
+        """
+        custom_file_path = os.path.join(self.custom_dir, self.custom_filename)
+        config_contents = {
+            "$schema": "./zowe.schema.json",
+            "profiles": {
+                "mainframe": {
+                    "properties": {"host": "example.com"},
+                    "profiles": {
+                        "zosmf": {
+                            "type": "zosmf",
+                            "properties": {"port": 1443},
+                            "secure": ["user", "password"],
+                        }
+                    },
+                }
+            },
+            "defaults": {"zosmf": "mainframe.zosmf"},
+        }
+        with open(custom_file_path, "w") as f:
+            json.dump(config_contents, f)
+
+        self.setUpCreds(
+            custom_file_path,
+            {
+                "profiles.mainframe.profiles.zosmf.properties.user": "admin",
+                "profiles.mainframe.profiles.zosmf.properties.password": "secret",
+            },
+        )
+
+        prof_manager = ProfileManager(appname=self.custom_appname)
+        prof_manager.config_dir = self.custom_dir
+        props: dict = prof_manager.load(profile_name="mainframe.zosmf", validate_schema=False)
+
+        expected_props = {
+            "host": "example.com",
+            "port": 1443,
+            "user": "admin",
+            "password": "secret",
+        }
+        self.assertEqual(props, expected_props)
+
     @mock.patch("zowe.secrets_for_zowe_sdk.keyring.get_password", side_effect=keyring_get_password)
     def test_profile_loading_with_user_overridden_properties(self, get_pass_func):
         """