Getting notifications for MS Defender definition updates all of a sudden in General Posted October 17, 2020 · Edited October 17, 2020 by jtcgiants56 I have pulseway set to send me a notification for critical updates. Normally windows defender definition updates would not fall under this. Over the past couple days I have started to get notifications for when these are released, which is many times a day. Is this a bug that these are now considered critical? If not a bug and is something new and intentional is there any way to exclude these?