diff --git a/sql_server/pyodbc/base.py b/sql_server/pyodbc/base.py
index bcc1104..224a0ba 100644
--- a/sql_server/pyodbc/base.py
+++ b/sql_server/pyodbc/base.py
@@ -300,6 +300,7 @@ def get_new_connection(self, conn_params):
         if auth:
             cstr_parts['Authentication'] = auth
             if auth == 'ActiveDirectoryInteractive':
+                cstr_parts.setdefault('UID', '')
                 cstr_parts.pop('PWD', '')
                 cstr_parts['Trusted_Connection'] = 'no'