diff --git a/airflow/providers/tabular/hooks/tabular.py b/airflow/providers/tabular/hooks/tabular.py
index 11dbb877d6394..fcf7d85d42e4f 100644
--- a/airflow/providers/tabular/hooks/tabular.py
+++ b/airflow/providers/tabular/hooks/tabular.py
@@ -68,7 +68,7 @@ def test_connection(self) -> Tuple[bool, str]:
             self.get_conn()
             return True, "Successfully fetched token from Tabular"
         except HTTPError as e:
-            return False, f"HTTP Error: {e}"
+            return False, f"HTTP Error: {e}: {e.response.text}"
         except Exception as e:
             return False, str(e)
 
@@ -79,10 +79,9 @@ def get_conn(self) -> str:
         base_url = base_url.rstrip('/')
         client_id = conn.login
         client_secret = conn.password
-        headers = {"Content-Type": "application/x-www-form-urlencoded"}
-        data = {"client_id": client_id, "client_secret": client_secret}
+        data = {"client_id": client_id, "client_secret": client_secret, "grant_type": "client_credentials"}
 
-        response = requests.post(f"{base_url}/{TOKENS_ENDPOINT}", data=data, headers=headers)
+        response = requests.post(f"{base_url}/{TOKENS_ENDPOINT}", data=data)
         response.raise_for_status()
 
         return response.json()["access_token"]