diff --git a/routes/memory_routes.py b/routes/memory_routes.py
index b1466c660..e788f82d2 100644
--- a/routes/memory_routes.py
+++ b/routes/memory_routes.py
@@ -377,7 +377,8 @@ def setup_memory_routes(memory_manager: MemoryManager, session_manager: SessionM
                     sess.endpoint_url, sess.model, sess.headers, owner=_owner(request)
                 )
             except KeyError:
-                 raise HTTPException(404, "Session not found — needed for LLM config")
+                logger.warning("Session %s not found, falling back to utility endpoint", session)
+                endpoint_url, model, headers = resolve_endpoint("utility", owner=_owner(request))
         else:
             endpoint_url, model, headers = resolve_task_endpoint(owner=_owner(request))