List all SPNs Used in your Active Directory

Full article and background here: List all SPNs Used in your Active DirectoryThere are a lot of hints & tips out there for troubleshooting SPNs (service principal names).Listing duplicate SPNs is fairly easy, use the “setspn -X” command and you’ll find out.But how do you find o

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Active Directory
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Verified on the following platforms
Windows 10 Yes
Windows Server 2012 Yes
Windows Server 2012 R2 Yes
Windows Server 2008 R2 Yes
Windows Server 2008 Yes
Windows Server 2003 No
Windows Server 2016 No
Windows 8 Yes
Windows 7 Yes
Windows Vista No
Windows XP No
Windows 2000 No
This script is tested on these platforms by the author. It is likely to work on other platforms as well. If you try it and find that it works on another platform, please add a note to the script discussion to let others know.