Microsoft Releases an Urgent Patch to Fix Authentication

This practical guide walks through Microsoft releases an urgent patch to fix authentication, explains the main requirements, and highlights common issues that may appear along the way.

This issue affects systems running Windows Server 2019 and lower versions, including Windows Server 2016, Windows Server 2012 R2, Windows Server 2012, Windows Server 2008 R2 SP1, and Windows Server 2008 SP2.

According to Microsoft, it was the security update released on November 9 that caused the Kerberos authentication problem. Therefore, an urgent update was released to quickly resolve the issue.

If you are using one of the above versions of Windows Server, you can download the emergency update by following the links below:

Usually you won't be able to download and install emergency updates via Windows Update. The emergency updates in this article also do not automatically install on affected systems.

You can find, download, and install emergency updates on the Microsoft Update Catalog page. For this article, this guide has provided download links for each update and you just need to click to download it.

Key Takeaways

Use the information above as a practical reference for Microsoft releases an urgent patch to fix authentication. Review each step carefully, confirm any requirements, and choose the option that best fits your situation.

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