diff --git a/hermes_cli/dashboard_auth/middleware.py b/hermes_cli/dashboard_auth/middleware.py
index 2c5f5b4f7b958..0cb4feaba48a2 100644
--- a/hermes_cli/dashboard_auth/middleware.py
+++ b/hermes_cli/dashboard_auth/middleware.py
@@ -185,6 +185,11 @@ def _auto_sso_response(request: Request) -> Response | None:
     from hermes_cli.dashboard_auth.prefix import prefix_from_request
 
     provider = providers[0]
+    # Password-only providers (e.g. basic) have no OAuth redirect flow;
+    # /auth/login would call start_login() which raises NotImplementedError.
+    # Let the normal /login page render instead.
+    if getattr(provider, "supports_password", False):
+        return None
     prefix = prefix_from_request(request)
     next_param = _safe_next_target(request)
     from urllib.parse import quote