Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Try this in order:
- Redeem the key in a different browser or an InPrivate/Incognito window.
- Clear the browser cache and cookies, then try again.
- Try the redemption on a different device.
- If the key is new, redeem it through Office.com/setup or https://microsoft365.com/setup and follow the on-screen prompts. This one-time process adds the product to the Microsoft account used for redemption.
- After redemption, sign in to the Services & subscriptions page and confirm the Microsoft 365 subscription or product appears there.
- If Microsoft 365 is already installed but not activating, open an Office app and make sure the correct Microsoft account is signed in. The product or subscription should match what appears under Services & subscriptions.
- If activation still fails on Windows, run the Microsoft 365 activation troubleshooter on the same Windows PC where Microsoft 365 is installed. It requires Windows 10 or later.
- If the page still does not move forward after the verification and Save button, contact Microsoft support through the public support channel for account and activation assistance.
If the product key was purchased from a source other than an official Microsoft store or partner, the key may be invalid or blocked. In that case, contact the seller for a refund.
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