9. NTLM vs Kerberos: How to Fix Authentication Issues 🔧

Is your Windows app falling back to NTLM instead of Kerberos? Don’t worry — in this step-by-step guide, I’ll walk you through the full troubleshooting flow. From the basics like domain names and time sync, all the way to advanced checks like SPNs, delegation, and Group Policy — you’ll finally understand why Kerberos isn’t working and how to fix it.

This video is perfect for sysadmins, cybersecurity beginners, and anyone working with Active Directory authentication.

🔑 What you’ll learn in this video:

Why NTLM fallback happens

How to confirm Kerberos tickets are working

Common browser and DNS issues that break authentication

The double-hop problem explained

How SPNs, delegation, and encryption affect Kerberos

Firewall & GPO checks that force NTLM

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#CyberSecurity #Kerberos #NTLM #WindowsServer #ActiveDirectory #Authentication #NetworkSecurity #SysAdmin #ITTraining