diff --git a/active-directory/1.0.0/src/app.py b/active-directory/1.0.0/src/app.py
index d7091b93..8b5e1245 100644
--- a/active-directory/1.0.0/src/app.py
+++ b/active-directory/1.0.0/src/app.py
@@ -6,6 +6,7 @@
     Connection,
     MODIFY_REPLACE,
     ALL_ATTRIBUTES,
+    NTLM
 )
 
 from ldap3.extend.microsoft.addMembersToGroups import ad_add_members_to_groups as addUsersInGroups
@@ -31,8 +32,7 @@ def __ldap_connection(self, server, port, domain, login_user, password, use_ssl)
         login_dn = domain + "\\" + login_user
 
         s = Server(server, port=int(port), use_ssl=use_SSL)
-        c = Connection(s, user=login_dn, password=password, auto_bind=True)
-
+        c = Connection(s, user=login_dn, password=password, authentication=NTLM, auto_bind=True)
         return c
 
     # Decode UserAccountControl code