Enter your product key for Microsoft 365 Business Standard

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If you bought Microsoft 365 Business Standard from a retail store, this article helps you activate your subscription.

Need something else? For help with Microsoft 365 Family or Microsoft 365 Personal, see Using product keys with Office.
Volume licensing customer? If you bought Microsoft 365 for business through a Microsoft Open License Program, see the article, Enter your product key purchased from Microsoft Open.

Activate a new subscription

  1. Go to https://microsoft365.com/setupbusiness.

  2. Enter your product key, then select Next.

  3. Enter your name, work email address, business phone number, company name, and country or region, then select Next.

  4. Enter a phone number to receive either a text or call to verify your identity.

  5. You can get a new domain, use a domain name you already own, or add a domain later. The steps can vary, so follow the prompts, depending on which option you choose.


    If you want to make sure that your subscription is automatically extended at the end of its term, you can add a credit card or bank account, and then turn on Recurring billing for that subscription.

  6. When you're finished, go to the Admin center to manage your subscription.

Extend the expiration date or add a license to an existing subscription

To extend the expiration date or add a license to your existing Microsoft 365 Business Standard subscription, use a new and unused product key for the same Microsoft 365 plan. Entering your original Microsoft 365 product key won't work because a key that has already been redeemed can't be used again. For more information, see Extend the expiration date of your prepaid subscription by using a Microsoft 365 product key or Add licenses to a prepaid subscription by using a Microsoft 365 product key.

Next steps

If you're new to Microsoft 365 for business, learn how to set up Microsoft 365.

Check out this list of common errors and solutions: Problems with your Microsoft 365 for business product key?

Or, call Microsoft Support.

Upgrade to a different plan (article)
What happens to my data and access when my Microsoft 365 for business subscription ends? (article)
Understand subscriptions and licenses in Microsoft 365 for business (article)