Microsoft confirms Kerberos and NTLM login failures in Windows 11 24H2, 25H2, and Server 2025 due to duplicate SIDs after ...

Microsoft released Patch Tuesday updates for the month of April 2025 earlier today. On Windows 10, they were published under KB5055518, KB5055519, and KB5055521. On Windows 11, they were published ...

The Kerberos authentication method originated at the Massachusetts Institute of Technology in the 1980s, as part of a project called Athena. The project involved integrating the computers on the MIT ...

Microsoft is investigating a new known issue causing enterprise domain controllers to experience Kerberos sign-in failures and other authentication problems after installing cumulative updates ...

Microsoft is investigating a new known issue causing enterprise domain controllers to experience Kerberos authentication problems after installing security updates released to address CVE-2020-17049 ...

Several readers responded to my previous post on pass-the-hash attacks, asking if Kerberos authentication versus LANManager, NTLM, or NTLMv2 was an effective defense. It’s a good question, one that I ...

Microsoft is working on a fix for a bug in last week's patch for a bypass vulnerability in the Kerberos Key Distribution Center (KDC) security feature. Microsoft has flagged the issue affecting ...

Proof-of-concept exploit code has been published this week for a new attack technique that can bypass the Kerberos authentication protocol in Windows environments and let intruders access sensitive ...