Need to buy a new key? Visit the Microsoft Store or a third-party reseller, or-if you're working with a partner-contact your partner. If you are renewing a subscription using a product key, you must use a new and unused product key. Enter a different key."Ĭheck the product keys you already entered to see if the key has already been added. "You have already entered this product key. If the issue persists, please contact the reseller where you bought your product key. Mistakes can be made with 0 and o, 5 and S, l and I, and so on. Please enter a different product key."Ĭarefully check the numbers and characters you are entering. Try entering it again." Or "This product key isn't valid. "The product key you entered isn't valid.
Otherwise, for business customers, carefully check the numbers and characters you're entering. If you're setting up Microsoft 365 Family or Personal, you need to redeem your product key at. If your product key is for Office 365 Solo, redeem it at /setup." If you're using Office 365 Solo in Japan: "Sorry, this is an invalid product key. If your product key is for Microsoft 365 Personal or Microsoft 365 Family, redeem it at /setup." Product key error help with Microsoft 365 for business Error message when you enter your product key. Need help immediately? Call Microsoft Support.įor help with a Microsoft 365 Family or Microsoft 365 Personal product key, see Using product keys with Microsoft 365. If there's an error message when you try to redeem a product key for Microsoft 365 for business, try these common solutions. Problems with your Microsoft 365 for business product key?
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