Managing personal Outlook.com account settings, security, and privacy
Hi BeauAK,
Thank you for providing the information of your concern.
We understand that you need help with receiving a push notification on Microsoft Authentication app when you sign in to your Outlook.com account. Let us guide you on how you can receive a push notification.
To switch your account over to notifications, you'll need to re-register your device. Go to Add account > Personal Microsoft account.
Let us know how it goes.