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M365 Show - Microsoft 365 Digital Workplace Daily

Microsoft Security Pulse: Protect, Detect, Defend

How to Enhance NTLM Authentication Monitoring with Windows Event Logs

Mirko Peters - M365 Specialist's avatar
Mirko Peters - M365 Specialist
Aug 13, 2025
∙ Paid

You have new problems when you watch NTLM authentication on your network. Better event data helps you see who uses resources. It also shows where logon failures happen. When you look at Windows Event 8004, sensors now show server names and destination computers for failed tries. These changes help you find strange actions. They also lower false alarms a…

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