As the post title states, the file FrontEncCallbacks.seq exists but it has no LoginLogout sequence! I went to look here because i want to customise it. Also, I have a strange error when my new teststand UI (written in LV2023Q1 x64) which often but not always throws an error at IApplicationMgr.Shutdown that i have not seen before, a single dialog showing 'Operation Aborted -2147467259 '. As the front end callback is probably called at this point i wonder if it is relevant? Could this be related to how TestStand now only shows the login window if multiple users are created?