Microsoft has fixed a known issue causing authentication problems when Credential Guard is enabled on systems using the Kerberos PKINIT pre-auth security protocol. According to Redmond, these ...

I try to only bring the fun problems to Ars. So I have two forests, we'll call them forest1 and forest2. I have a SQL 2008 R2 server in forest1 that we'll call sql1 running an instance called DB2 on ...

Microsoft has issued out-of-band (OOB) updates to address authentication failures on domain controllers that run all currently supported editions of Windows Server. According to the security advisory, ...

Recently, I was working with a client that was having a number of Kerberos problems. While reviewing their environment to troubleshoot their Kerberos issues I noticed something that is called a ...

Today is Microsoft's August 2025 Patch Tuesday, which includes security updates for 107 flaws, including one publicly disclosed zero-day vulnerability in Windows Kerberos. This Patch Tuesday also ...