diff --git a/src/openvpnserv/interactive.c b/src/openvpnserv/interactive.c
index 24e3f341..6a977b68 100644
--- a/src/openvpnserv/interactive.c
+++ b/src/openvpnserv/interactive.c
@@ -2175,7 +2175,7 @@ CreateClientPipeInstance(VOID)
 
     openvpn_swprintf(pipe_name, _countof(pipe_name), TEXT("\\\\.\\pipe\\" PACKAGE "%ls\\service"), service_instance);
     pipe = CreateNamedPipe(pipe_name, flags,
-                           PIPE_TYPE_MESSAGE | PIPE_READMODE_MESSAGE,
+                           PIPE_TYPE_MESSAGE | PIPE_READMODE_MESSAGE | PIPE_REJECT_REMOTE_CLIENTS,
                            PIPE_UNLIMITED_INSTANCES, 1024, 1024, 0, NULL);
     if (pipe == INVALID_HANDLE_VALUE)
     {