Kurt Hudson over on the AD documentation team blog has put together a pretty thorough wiki on how to register and troubleshoot Service Principal Names (SPNs). An SPN is the way a service on a particular computer is located in Kerberos / AD. It’s always been a confusing subject for me, especially when you combine it with utilities like KTPASS. Check it out; if it doesn’t answer all your questions, or you have suggestions, he’s all ears.
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