Microsoft has announced a critical hardening update that will take effect on April 7, 2025, requiring all customers to upgrade Microsoft Entra Connect Sync to the minimum supported version:
- 2.4.18.0 for customers in commercial clouds
- 2.4.21.0 for customers in noncommercial clouds
What Happens if You Don't Upgrade?
Failure to update by the deadline will result in:
- Authentication failures when using the Entra Connect Sync wizard
- AD FS & PingFederate configuration issues in the wizard
- Loss of wizard functionality requiring Entra ID sign-in
The Good News
- Sync services will continue to function after the deadline
- You can still upgrade at any time to restore full functionality
Next Steps
To ensure a smooth upgrade, your environment must meet the following minimum requirements:
- TLS 1.2 enabled
- .NET Framework 4.7.2 or later installed
We strongly recommend upgrading as soon as possible to avoid last-minute disruptions. If you need assistance evaluating your current setup, ensuring compatibility, or performing the upgrade, Katalyst can help.
👉 Existing customers: Reach out to your Account Manager for guidance.
👉 New to Katalyst? Schedule a call with our team today.
