Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Microsoft 365 purchased online directly from Microsoft normally has no product key; install and activate it by signing in with the Microsoft account used for the purchase.^1^
Install Microsoft 365 on Windows
- Open the Microsoft 365 Services & subscriptions page: https://account.microsoft.com/services/
- Sign in with the Microsoft account used when purchasing Microsoft 365.
- Find your Microsoft 365 subscription and select Install or Install apps.
- Select Microsoft 365 apps. Choose the language or 32/64-bit version if prompted; 64-bit is normally selected by default.
- After the installer downloads:
- Microsoft Edge: select Run.
- Chrome: select Setup.
- Firefox: select Save File, then open the downloaded file.
- If Windows asks, “Do you want to allow this app to make changes to your device?”, select Yes.
- Keep the computer switched on and connected to the Internet. When “You’re all set! Office is installed now” appears, select Close.^2^
Activate the applications
- Select Start and open an application such as Word.
- Accept the licence agreement.
- If prompted, sign in with the same Microsoft account used for the purchase.
- Do not select the product-key option for a normal Microsoft 365 online subscription; the Microsoft account holds the licence and activates the applications.^1^
If the subscription is not listed
Check the following:
- Sign out and try another Microsoft account that may have been used for the purchase.
- Check your Microsoft order history: https://account.microsoft.com/billing/orders
- Open the purchase-confirmation email and select Install Office, if that option is present.
- If Microsoft 365 was purchased from another online retailer and the retailer supplied a new key, redeem it once at https://www.office.com/setup. After redemption, the licence becomes associated with your Microsoft account; future installations use that account rather than the key.^3^
- If it was purchased from a third-party seller but no subscription or key was supplied, contact that seller for the purchase and redemption information.
Microsoft 365 does not display a full product key inside Office or online. In Word, File → Account → Belongs to shows the Microsoft account associated with the installed licence.^1^
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