Multi-Factor Authentication Server versions and scale migrations to Entra MFA

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Microsoft Azure Multi-Factor Authentication

Yesterday, Microsoft released versions and of its MFA Server product that allows organization to add multi-factor authentication to RADIUS-, AD FS-, IIS-based and other on-premises authentication scenarios.


Versions and

MFA Server v8.1.13.1 is intended for  use on:

  • Windows Server 2012
  • Windows Server 2012 R2
  • Windows Server 2016

MFA Server v8.1.14.1 is intended for  use on:

  • Windows Server 2019
  • Windows Server 2022


What’s New

The release notes mention the following changes:

  • MFA Server versions and add throttling retry support to Microsoft Graph calls in the Migration Utility UI. When requests to the Microsoft Graph API get an HTTP 429 responses, these requests are retried after waiting for the retry-after seconds indicated in the response. This addresses the the following error which resulted in incomplete Azure AD MFA settings for some users displayed in the UI:

Too Many Requests

  • MFA Server versions and address an issue in the Migration Service that caused errors when the service is run on a secondary MFA Server.


Known Issues

Windows Authentication for Remote Desktop Services (RDS) is not supported for Windows Server 2012 R2, and up.


Upgrade considerations

You must upgrade MFA Server and Web Service SDK before upgrading the User Portal and/or AD FS adapter. Read the guidance in the How to Upgrade section in this blogpost for more information.



You can download Azure Multi-Factor Authentication Server and here.
The downloads weigh 145,9 MB and 150,3 MB, respectively.


Version information

These are versions and of Multi-Factor Authentication Server.
It was signed off on March 26th, 2024.

Further reading

Existing Azure MFA Server deployments stop working starting September 30, 2024
TODO: Migrate from Azure MFA Server to Azure multi-factor authentication
Multi-Factor Authentication Server version addresses service crashes during activation
Multi-Factor Authentication Server version offers improved migration abilities

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