diff --git a/source3/winbindd/winbindd_msrpc.c b/source3/winbindd/winbindd_msrpc.c
index b14a4f8..318d2e0 100644
--- a/source3/winbindd/winbindd_msrpc.c
+++ b/source3/winbindd/winbindd_msrpc.c
@@ -1163,6 +1163,7 @@ static NTSTATUS winbindd_lookup_names(TALLOC_CTX *mem_ctx,
  connect:
 	status = cm_connect_lsat(domain, mem_ctx, &cli, &lsa_policy);
 	if (!NT_STATUS_IS_OK(status)) {
+		domain->can_do_ncacn_ip_tcp = false;
 		return status;
 	}