Activating Microsoft 365 Apps for Business with a product key

• Applies to:

  Microsoft 365

You might have a product key for Microsoft 365 Apps for Business. If so, there are two separate actions you might need to do with the product key.

Activate your Microsoft 365 Apps for Business subscription

• If you purchased a Microsoft 365 subscription from a retail store, see Enter your product key for Microsoft 365 Apps for business.

• If there's an error message when you try to redeem a product key, see Problems with your Microsoft 365 for business product key?

Activate Microsoft 365 Apps on your device

Use your Microsoft account, not your product key, to install and activate Microsoft 365 and individually purchased Microsoft 365 Apps, such as Project, Visio, Word, Excel, or Outlook. For more information, see Office is prompting me for a product key.

• If your purchase of Office came with a product key, see Where to enter your Office product key.

• For help with a Microsoft 365 Home or Personal product key, see Using product keys with Office.