The process to find or replace a product key is different for a trial version than it is for a full version of the product. A trial version is a free, temporary version of a Microsoft product that lets you activate one time to try it before you purchase
it. After you activate the trial version, it is fully functional for 60 days. To find the product key for a trial version, visit the "How to locate the product key
for a trial version" section.
A full version provides a perpetual license. This means that you can activate the software on two computers , and use the software for the life of each computer. To find or replace the product key for a full version, visit the "How
to locate the product key for a full version" section.
For further details, you can refer to this KB article:
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