Getting we cant setup your office account

The error message shown after selecting Confirm indicates that Office.com/setup cannot complete the account setup even though the product key was validated. This scenario is covered by the generic guidance for Office.com/setup product key errors.

Follow these steps:

1. Keep the product key safe and wait a while before trying again at Office.com/setup or Microsoft365.com/setup, as the message suggests.
2. When retrying, carefully re-enter the product key or copy and paste it from the purchase confirmation email to avoid character mistakes (for example, B vs 8, G vs 6, O vs 0, Q vs 0, or VV vs W).
3. If the error persists, contact the retailer where Office was purchased to confirm that the key was properly activated at the point of sale. A key that was not activated by the retailer cannot be redeemed online.
4. If the key is confirmed as activated and the problem continues, contact Microsoft Support for further assistance, referencing the error code and correlation ID shown on the error screen.

Once the key is successfully redeemed and associated with the Microsoft account, install and activate Office by signing in with that same account rather than re-entering the product key.

References:

• Get help with product key errors on Office.com/setup
• "This product key has already been used" error in Office