Find missing SPN registrations

Active Directory admins are probably well aware of how Kerberos works. If you need a little refresher, check out the article over at askds: Kerberos for the busy admin. Kerberos requires a service principle name (SPN) for each Kerberos enabled network service offered in the forest: a file service, KDC, web farm, whatever. Typical examples…

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Why you can still have duplicate SPNs in AD 2012 R2 and AD 2016

As an AD admin you are probably familiar with the problem of duplicate Service Principal Name (SPN) attributes. Need a refresher on Kerberos and SPN? Read the famous blogpost over at askds: Kerberos for the busy admin. If you have these duplicates, Kerberos fails for the affected accounts. It always fails so there is no…

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