Microsoft recently admitted that Windows devices had Kerberos authentication-related issues after installing the November update. Today comes the good news that Microsoft has fixed the problem.
Microsoft Releases Urgent Out-of-Band Update (OOB) to Fix Kerberos Authentication Issues in Win10 / Win11
Kerberos authentication is a computer network security protocol used to authenticate service requests from two or more trusted hosts on an untrusted network (such as the Internet).
This Kerberos authentication issue encountered by Win10 and Win11 devices emerged after the installation of a cumulative update released on the Patch Tuesday event day in November this year, causing domain user login failures, remote desktop connection failures for domain users, and printing that may require domain user authentication.
In the Windows Health control panel, Microsoft said it has released an urgent out-of-band (OOB) update that needs to be installed by all devices that have domain control enabled in their environment. Microsoft says that no other changes are required for client or server devices.
The KB updates available for various SKUs of Windows Server are as follows.
Cumulative updates.
Windows Server 2022: KB5021656
Windows Server 2019: KB5021655
Windows Server 2016: KB5021654
Standalone updates.
Windows Server 2012 R2: KB5021653
Windows Server 2012: KB5021652
Windows Server 2008 R2 SP1: This update is not yet available, but is expected to arrive in the next few weeks
Windows Server 2008 SP2: KB5021657
