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Starting September 15, 2023, Microsoft will be making changes improve your sign-in experience by prompting you to set up the Authenticator app to improve your sign-in experience.
![User performs multifactor authentication](https://learn.microsoft.com/en-us/azure/active-directory/authentication/media/how-to-nudge-authenticator-app/user-mfa.png)
Clicking "not now" will not make any changes. However, if you want to switch to the authenticator app you can follow the on-screen prompts to download and configure the Microsoft Authenticator App for your account. You can follow the steps below to setup the Microsoft Authenticator App on your phone.
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First download the app.
![User downloads Microsoft Authenticator](https://learn.microsoft.com/en-us/azure/active-directory/authentication/media/how-to-mfa-registration-campaign/user-downloads-microsoft-authenticator.png)
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See how to set up the Authenticator app.
![User sets up Microsoft Authenticator](https://learn.microsoft.com/en-us/azure/active-directory/authentication/media/how-to-nudge-authenticator-app/setup.png)
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Scan the QR Code.
![User scans QR Code](https://learn.microsoft.com/en-us/azure/active-directory/authentication/media/how-to-nudge-authenticator-app/scan.png)
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Approve the test notification.
![User approves the test notification](https://learn.microsoft.com/en-us/azure/active-directory/authentication/media/how-to-nudge-authenticator-app/test.png)
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Notification approved.
![Confirmation of approval](https://learn.microsoft.com/en-us/azure/active-directory/authentication/media/how-to-nudge-authenticator-app/approved.png)
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Authenticator app is now successfully set up as the user's default sign-in method.
![Installation complete](https://learn.microsoft.com/en-us/azure/active-directory/authentication/media/how-to-nudge-authenticator-app/finish.png)