Active Directory health issues don't announce themselves - replication failures, DNS misconfigurations, and group policy inconsistencies build up quietly until something breaks. Here's a practical baseline health assessment you can run in any AD environment, including the exact tools and commands to use.

Duplicate SPN Active Directory issues cause Kerberos authentication to fall back to NTLM, a weaker protocol vulnerable to relay attacks, pass-the-hash, and brute force cracking. Finding and removing duplicate SPNs is a straightforward fix that most environments overlook entirely. What is a Service Principal Name? Service principal names (SPN) is used by Kerberos to link a service to a service account. This allows a user to access a service without knowing the service account

Do you need to search all of your group policies to find a setting and do not want to spend a lot of time clicking around? Well, I did. I...