How do I find my key code for Microsoft Office on my old computer?

I have Office 2007 on my old computer and now have a new computer that I want to install Office on. I do not have my Key Code. How do I retrieve my key code from the old computer?

I got it.

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Well, I found it but now I can't get it to install. How do I install this on Windows 8?


Noob Whisperer
Are you certain that you managed to find the correct product key?
How and what did you use to find it?
Are you getting an error message?
If so, what is the message saying?

It has nothing to do with the product key. I can't even get that far.

I get a message that says, "This app can't run on your PC", "To find a version for your PC, Check with the software publisher"

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