Microsoft Entra recommendation: Minimize MFA prompts from known devices
Microsoft Entra recommendations is a feature that provides you with personalized insights and actionable guidance to align your tenant with recommended best practices.
This article covers the recommendation to minimize multifactor authentication prompts from known devices. This recommendation is called
tenantMFA in the recommendations API in Microsoft Graph.
As an admin, you want to maintain security for your company’s resources, but you also want your employees to easily access resources as needed.
MFA enables you to enhance the security posture of your tenant. While enabling MFA is a good practice, you should try to keep the number of MFA prompts your users have to go through at a minimum. One option you have to accomplish this goal is to allow users to remember multifactor authentication on trusted devices.
The "remember multifactor authentication on trusted device" feature sets a persistent cookie on the browser when a user selects the "Don't ask again for X days" option at sign-in. The user isn't prompted again for MFA from that browser until the cookie expires. If the user opens a different browser on the same device or clears the cookies, they're prompted again to verify.
For more information, see Configure Microsoft Entra multifactor authentication settings.
This recommendation shows up if you have set the remember multifactor authentication feature to less than 30 days.
This recommendation improves your user's productivity and minimizes the sign-in time with fewer MFA prompts. Ensure that your most sensitive resources can have the tightest controls, while your least sensitive resources can be more freely accessible.
Review the How to configure Microsoft Entra multifactor authentication settings article.
Browse to Identity > Protection > Multifactor authentication > select the Additional cloud-based multifactor authentication settings link.
Adjust the number of days in the remember multifactor authentication on trusted device section to 90 days.