Multi-Factor Authentication Server versions and add support for OATH codes

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Microsoft Azure Multi-Factor Authentication

On January 19th, 2024, 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 8.1.12

MFA Server v8.1.11.1 is intended for  use on:

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

MFA Server v8.1.12.1 is intended for  use on:

  • Windows Server 2019
  • Windows Server 2022


What’s New

The release notes mention the following change:

Support for OATH codes

MFA Server versions and add support for OATH codes  in the Microsoft Authenticator app after the user account has been migrated to Entra MFA.

After the first push notification attempt in Entra MFA, the account in the Microsoft Authenticator app starts using SHA-256 to generate OATH codes. MFA Server previously only supported SHA-1 so could not validate these codes. Azure MFA Server has been modified to check both SHA-1 and SHA-256 codes, which allows users to use OATH codes for both Entra MFA and MFA Server scenarios during migration.


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 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 download weighs 145 MB.


Version information

These are versions and of Multi-Factor Authentication Server.
It was signed off on January 19th, 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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