Is it possible to retrieve Product Keys on Windows 2012r2 servers?

I recently started a new job as a system admin and there were several Windows 2012r2 servers already in place, including domain controllers. I do not seem to be able to find the product keys that were used for the installs though. I have already tried GOOGLING and running several .PS1 scripts and they do work if trying to retrieve older OS product keys but I am not able to retrieve 2012r2 keys. All I ever get is BBBB-BBBB-BBBB-BBBB-BBBB. Is this something that is even possible on 2012r2? I have full access to the entire domain as a domain admin. Do I have any options to get the key?
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Yes.   I've used Magic Jellybean for years on all types of Windows systems, but hadn't tried it on Server 2012.   I just tested it on my Server 2012r2 box and it worked perfectly.

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Thor2923Author Commented:
Thanks but it just got a lot of BBBB again. This servers must be locked down somehow
If the server was delivered with the OS already on it, and if it is a server with UEFI BIOS, the key is probably embedded in the BIOS. If that is the case you normally don't need to know the key, as the OS will activate automatically during the installation provided you install the correct version of the OS (or use a recovery partition which may also be in place).

Masquerade's article below could help you verify this and extract the key from the BIOS:
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Windows Server 2012

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