diff --git a/postgres/CHANGELOG.md b/postgres/CHANGELOG.md
index e8102ecdb06e4..f45deaa35d8f2 100644
--- a/postgres/CHANGELOG.md
+++ b/postgres/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+***Fixed***:
+
+* Return Azure AD auth token in correct format ([#15701](https://github.com/DataDog/integrations-core/pull/15701))
+
 ## 14.2.0 / 2023-08-18
 
 ***Added***:
diff --git a/postgres/datadog_checks/postgres/azure.py b/postgres/datadog_checks/postgres/azure.py
index b4c68d6bc6e1d..409efef47e859 100644
--- a/postgres/datadog_checks/postgres/azure.py
+++ b/postgres/datadog_checks/postgres/azure.py
@@ -1,12 +1,10 @@
 # (C) Datadog, Inc. 2023-present
 # All rights reserved
 # Licensed under a 3-clause BSD style license (see LICENSE)
-import struct
 
 from azure.identity import ManagedIdentityCredential
 
 DEFAULT_PERMISSION_SCOPE = "https://ossrdbms-aad.database.windows.net/.default"
-TOKEN_ENCODING = "UTF-16-LE"
 
 
 # Use the azure identity API to generate a token that will be used
@@ -15,7 +13,4 @@ def generate_managed_identity_token(client_id: str, identity_scope: str = None):
     credential = ManagedIdentityCredential(client_id=client_id)
     if not identity_scope:
         identity_scope = DEFAULT_PERMISSION_SCOPE
-    token_bytes = credential.get_token(identity_scope).token.encode(TOKEN_ENCODING)
-    token_struct = struct.pack(f'<I{len(token_bytes)}s', len(token_bytes), token_bytes)
-
-    return token_struct
+    return credential.get_token(identity_scope).token
diff --git a/postgres/datadog_checks/postgres/connections.py b/postgres/datadog_checks/postgres/connections.py
index e2fbcc7f173df..bc39858e4c3f2 100644
--- a/postgres/datadog_checks/postgres/connections.py
+++ b/postgres/datadog_checks/postgres/connections.py
@@ -73,7 +73,6 @@ def __init__(self, check: AgentCheck, connect_fn: Callable[[str, int, int], None
         self.max_conns: int = max_conns
         self._stats = self.Stats()
         self._mu = threading.RLock()
-        self._query_lock = threading.Lock()
         self._conns: Dict[str, ConnectionInfo] = {}
 
         if hasattr(inspect, 'signature'):
diff --git a/postgres/datadog_checks/postgres/postgres.py b/postgres/datadog_checks/postgres/postgres.py
index 9adfd0cdd4477..afcd0beed5206 100644
--- a/postgres/datadog_checks/postgres/postgres.py
+++ b/postgres/datadog_checks/postgres/postgres.py
@@ -665,7 +665,7 @@ def _new_connection(self, dbname: str, min_pool_size: int = 1, max_pool_size: in
             client_id = self._config.managed_identity.get('client_id', None)
             scope = self._config.managed_identity.get('identity_scope', None)
             if client_id is not None:
-                password = azure.generate_managed_identity_token(client_id=client_id, scope=scope)
+                password = azure.generate_managed_identity_token(client_id=client_id, identity_scope=scope)
 
             conn_args = {
                 'host': self._config.host,