Custom greetings in voice call authentication will retire on Feb 28, 2026

As communicated in MC1125485 and Configure Microsoft Entra multifactor authentication - Microsoft Entra ID | Microsoft Learn, we will retire the Custom greetings feature in Voice call authentication on February 28, 2026. This feature allowed organizations to customize voice call greetings for multifactor authentication (MFA). After this date, voice call authentication messages will use Microsoft’s default recordings. How this affects your organization Starting February 28, 2026, the custom greeting feature will no longer be available. Voice call authentication will revert to Microsoft’s default voice recordings. If your organization relies on custom greetings for branding or user recognition during MFA, this change may impact the user's experience. What you need to do to prepare This retirement will happen automatically on the specified dates. If your organization is still using the Custom greetings feature, begin preparing users for the transition to Microsoft’s default voice greetings. Review your multifactor authentication configuration and ensure users are aware of the upcoming change: Authentication methods - Microsoft Entra admin center For guidance on planning and implementing Microsoft Entra multifactor authentication, see: Deployment considerations for Microsoft Entra multifactor authentication - Microsoft Entra ID | Microsoft Learn