Activate your product key for Office 365 for business

You can use an Office 365 product key for Office 365 Midsize Business or Office 365 Small Business to activate a subscription or add users to an existing subscription. A product key is a unique 25-character alpha-numeric code that is required to activate a subscription, access online services, or download software. You purchase Office 365 product keys at a retail store or from a Microsoft partner or reseller. There are no product keys for Office 365 Enterprise.

To activate your Office 365 Small Business or Office 365 Midsize Business product key:

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 Note    This article discusses product keys for Office 365 for business only. If you purchased an Office 365 Home product key card, you can activate it by entering it here. For more information, see Find your product key for Office 2013 and Office 365 Home.

License amounts for Office 365 Small Business and Office 365 Midsize Business product keys:

  • Office 365 Small Business product key licenses:    With one product key card, you can activate a single license for one user for one year. That user can install the latest version of Office on up to five PCs or Mac computers used by that user.
  • Office 365 Midsize Business product key licenses:    You can purchase licenses in quantities of 1, 10, 25, or 50 with a single Office 365 Midsize Business product key from a reseller or through a partner. Each license is for a single user for one year.

If you’re looking for a partner to purchase a product key from, use Microsoft Pinpoint.

If you lose your product key, contact the partner or reseller you bought it from.

Problems entering your product key?

Here's a list of common error messages and their solutions.

ShowI get one of the following error messages when I enter my product key: “The product key you entered isn’t valid. Try entering it again.” Or “This product key isn’t valid. Please enter a different product key.”

Carefully check the numbers and characters you are entering. Mistakes can be made with 0 and o, 5 and S, l and I, and so on. If the issue persists, please contact the reseller where you bought your product key.

ShowI get the following error message when I enter my product key: “You have already entered this product key. Enter a different key.”

Check the product keys you already entered to see if the key hasn’t already been added. If the issue persists, please contact Support.

ShowI get the following error message when I enter my product key: "The product key you entered has expired. Enter a different key."

Please contact Support.

ShowI get the following error message when I enter my product key: "This product key has already been used. Please enter a different product key."

The product key you entered has already been redeemed. Verify that the key hasn’t already been used by you or a member of your organization. If the key hasn’t already been used, please contact your reseller where you bought the product key.

ShowI get the following error message when I enter my product key: "Sorry, we can’t process your request right now. Please wait a few minutes and try again."

If subsequent attempts result in the same error message for more than 15 minutes, please contact Support.

ShowI get the following error message when I try to activate my product key: “The requested subscription is not available. One of the following reasons could have caused this: The offer is not available - The service is not available in your country - It is impossible to use/select the same trial twice. If the issue persists, contact Microsoft support.”

Please contact Support.

ShowI get the following error message when I enter my product key: "You’ve added more user licenses than this offer allows. The maximum is <x> user licenses. Remove this product key and enter one that adds fewer user licenses."

Please contact your reseller or partner. You have purchased more licenses than can be used with this Office 365 account.

ShowI get the following error message when I enter my product key: "Your organization hasn’t been upgraded to the version of Office 365 that supports the use of product keys. To find out when your organization will be upgraded, contact Support."

In Office 365, go to Admin > Get help and online community support (or Support). Click New service request, and then complete the form.

ShowI get the following error message when I enter my product key: "You must be a global or billing admin to redeem a product key."

Be sure your permissions are set as either billing or global admin. To verify this, in Office 365, go to Admin, click Settings Settings: update your profile, install software and connect it to the cloud, and then click Office 365 settings.

ShowI get the following error message: “Sorry, we can’t create your account right now. Please wait a few minutes and try again.”

If the problem persists, please contact Support.

ShowI get the following error message when I try to redeem a product key: "Sorry, we can’t process your order. To complete the process, sign in to your new Office 365 account, click Licenses, and redeem your product keys on the Subscriptions page."

The tenant was created, but the product keys were not redeemed. Sign in to Office 365 with your user ID. Go to Admin, click Licenses (or Licensing), and try to redeem your product keys again. If the problem persists, please contact Support.

 
 
Applies to:
Office 365 Enterprise, Office 365 Enterprise admin, Office 365 Midsize Business, Office 365 Midsize Business admin, Office 365 Small Business, Office 365 Small Business admin