The Office product key shown on the Microsoft account, Services & subscriptions page will always be different than the product key that's shown on a product key card or email receipt.
Learn how to activate Office that is pre-installed on new Windows 10 PCs or using a new product key.
Many tasks for Office products don't require a product key because your Microsoft account takes care of them instead.
Se si è acquistato Office o Microsoft 365 con un codice Product Key, occorre immettere questo codice in uno dei siti Web elencati di seguito in base al prodotto. Dopo aver immesso il codice, è possibile scaricare e installare Office oppure rinnovare l'abbonamento a Microsoft 365.
Wenn Ihr Kauf von Office oder Microsoft 365 mit einem Product Key verbunden war, geben Sie Ihren Product Key auf einer der Websites ein, die nachstehend für Ihr Produkt aufgeführt sind. Nachdem Sie Ihren Key eingegeben haben, können Sie Office herunterladen und installieren, oder Sie können Ihr Microsoft 365-Abonnement verlängern.
If you downloaded Office from an online store, the product key should be in your email receipt. If you didn’t get a receipt, check your junk mail folder. If Office came with a box, card, or disc, look on the card or the packaging. If Office came with your computer, look on the Certificate of Authenticity. Find your Product Key for Office 2010.
I've been asked to "re-key" my copy of MS Office 2007 to use a different product key. Is this possible? If so, how would I do it?
Problem is, that for each of these license keys, when the Office 2007 software asks that I enter the "Product Key" it states: The key is incorrect. Verify that you have the correct key, and then retype it Why would Microsoft want to inhibit/prohibit re-installs on the same machine that the software was initially installed to?