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 ...

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 ...

Account administration in a distributed UNIX/Linux environment can become complicated and messy if done by hand. Large sites use special tools to deal with this problem. In this article, I describe ...

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 ...

The various versions of Windows have used Kerberos as its main authentication protocol for over 20 years. However, in certain circumstances, the OS has to use another method, NTLM (NT LAN Manager).

Entire books have been written on network security and IPSec. Full of three-letter acronyms for encryption technologies and concepts like "data integrity" versus "data authorization," network security ...

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 ...

Authentication issues in Windows Server after April updates Logon failures for WHfB and Device Public Key Authentication Workaround available, Microsoft working on permanent fix for impacted Windows ...

A fix introduced into Windows last month to close a weakness in Kerberos authentication is causing logon failures for some Windows Hello for Business (WHfB) users, Microsoft has warned. In theory, the ...