The January 2026 updates will begin the phaseout of RC4 encryption in the Kerberos protocol for Windows Server. The trigger ...
The Windows security updates from January herald the phase-out of insecure RC4 encryption. A vulnerability requires action.
Microsoft rolls out new Kerberos protections to block RC4 encryption, with enforcement mode becoming mandatory for domain controllers in 2026.
Why it matters: According to Microsoft, an encryption bug in older versions of Windows 11 and Windows Server 2022 could lead to data corruption on systems running Ice Lake, Tiger Lake, or Rocket Lake ...
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