windows 2012 license key

Question

I have bought windows 2012 cd with license key
How to ensure whether the key is valid or not with out install the windows and activate it with that key

Answer 1

You can call the activation center to confirm.
https://www.microsoft.com/en-us/licensing/existing-customer/activation-centers

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Answer 2

Firstly, you could consult the license key seller directly.
Secondly, Microsoft Licensing Activation Center and Volume Licensing Service Center can help you to check all of your volume licensing information and Review the status of your enrollments
Microsoft Licensing Activation Centers worldwide telephone numbers
https://www.microsoft.com/en-us/licensing/existing-customer/activation-centers
VLSC Support Center Contact Info
https://learn.microsoft.com/en-us/licensing/contact-us

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