: If you bought it online from a retailer or the Microsoft Store, search your inbox for "Product Key" or "Microsoft Order".

Microsoft offers completely free. You just need a Microsoft account (Outlook.com or Hotmail.com).

Notice the gap? There is no release. So, why are people searching for "Excel 2017"?

If you bought a digital copy, search your inbox for keywords like "Microsoft Store" or "Product Key".

There are several free and reputable utilities designed to scan the Windows Registry and decrypt the product key for Office and Windows.