On June 15th, 2023, Microsoft released version 8.1.9.1 of its Azure MFA Server product that allows organization to add multi-factor authentication to RADIUS-, AD FS-, IIS-based and other on-premises authentication scenarios.

Note:
Currently, Microsoft no longer offers Azure Multi-Factor Authentication Server on-premises ("MFA Server") for new deployments and trial tenants. Existing Azure MFA Server deployments stop working starting September 30, 2024.

What's New

The release notes mention the following changes:

More options for migrating the default method

Previously, the Migration Utility offered a checkbox for either migrating or not migrating the default method. The latter could cause issues if the user didn't already have a default method in Azure Active Directory.

The new functionality provides three options in the Migration Utility UI:

1. Always migrate
2. Only migrate if not already set in Azure AD
3. Set to the most secure method available if not already set in Azure AD

These options provide a lot more flexibility.

Check on the Authentication Methods Policy

When using the Migration Utility, the Authentication Methods Policy is now checked during migration.

If the default method being migrated is not allowed by the policy, then it will instead be set to the most secure method available.

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.

Download

You can download Azure Multi-Factor Authentication Server 8.1.9.1 here.
The download weighs 146 MB.

Version information

This is version 8.1.9.1 of Azure Multi-Factor Authentication Server.
It was signed off on June 15th, 2023.

FURTHER READING

Existing Azure MFA Server deployments stop working starting September 30, 2024
Ten Things you need to know about Azure Multi-Factor Authentication Server
Supported Azure MFA Server Deployment Scenarios and their pros and cons
HOWTO: Uninstall and Remove Azure MFA Server versions 7.x and 8.x Implementations