If your Office product key doesn’t work, or has stopped working, you should contact the seller and request a refund. If you bought a product key separate from the software, it’s very possible the product key was stolen or otherwise fraudulently obtained, and subsequently blocked for use. Unfortunately, there are many dishonest sellers who offer stolen, abused, or otherwise unauthorized Microsoft product keys for sale. Sometimes these product keys are printed on counterfeit labels or cards with a download link to Microsoft software, and sometimes they’re distributed with software media that is unauthorized for resale, such as promotional media, original equipment manufacturer reinstallation media, or other Microsoft program-specific media.
My Office product key doesn’t work, or Office suddenly becomes unlicensed
Applies To: Excel 2016 Word 2016 Outlook 2016 PowerPoint 2016 OneNote 2016 Access 2016 Office 2016 Excel 2013 Word 2013 Outlook 2013 PowerPoint 2013 OneNote 2013 Access 2013 Visio 2013 Excel 2010 Word 2010 Outlook 2010 PowerPoint 2010 Access 2010 OneNote 2010 Visio 2010 Project 2010 Excel 2007 Word 2007 Outlook 2007 PowerPoint 2007 Access 2007 Visio 2007 OneNote 2007 Project 2007 Office 2007 Office 2010 Office 2013 More... Less