I have Office 2007, and after moving house, I cannot find the CD case at all, and this contained the product key. It is already installed on my PC but I was worried in case it ever needs activating again, ie. do you ever need to re-activate it on an annual basis or anything? I'm aware that I would need the product key if I was ever to reinstall, but aside from that, would I ever need to re-activate the product once it's been activated?
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