Eller det her.. der er muligheder nok :-)
http://www.nirsoft.net[...]
ProduKey is a small utility that displays the ProductID and the CD-Key of
MS-Office, Windows, Exchange Server, and SQL Server installed on your
computer. You can view this information for your current running
operating system, or for another operating system/computer - by using
command-line options. This utility can be useful if you lost the product
key of your Windows/Office, and you want to reinstall it on your computer.
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