i used the wrong email address when trying to activate office 365

Question

i was using a new product key to renew my office 365 but i used the wrong email address to activate it

now it wont allow me to activate the office saying that i need to use the original email address

please advise how i can change this.

Kind Regards
Nashreen

Answer 1

Hello, good day and thanks for your question. To add to the above, if this is for Microsoft 365 there is no product key involved as it is tied to the account where you have purchased the subscription. Have you already checked and confirmed that the subscription is really not present on your account when you login at account.microsoft.com/services from a browser?

Answer 2

A Microsoft 365/Office product key becomes permanently tied to the Microsoft account used when it is redeemed. It cannot be moved to a different email address after redemption.

To continue using Office:

1. Sign in with the Microsoft account that was used when the product key was redeemed:
   • Go to the Subscriptions page and sign in with the email address you used by mistake.
   • If the subscription or product appears there, that is now the correct account to use for installing and activating Office.
   • Install or re-activate Office by signing into the Office apps with that same account instead of entering the product key again.
2. If unsure which account was used:
   • Try signing in with all personal email addresses at the Subscriptions page.
   • The account where the Office product or Microsoft 365 subscription is listed is the one that must be used to activate Office.
3. Do not try to redeem the same product key again:
   • After a key is redeemed, Office is added to that Microsoft account and the key itself cannot be reused or moved to another account.

If access to the wrong email account is lost (for example, forgotten password), recover that Microsoft account first using Microsoft’s standard account recovery options, then use it to manage and activate Office.

---

References:

• "This product key has already been used" error in Office
• Unlicensed Product and activation errors in Office