Complete these steps if you currently have Office 365 University and you want to convert it to an Office 365 Home or Personal subscription using a product key.
Note: Your Microsoft account can have only one subscription associated with it. If you use the same Microsoft account to buy or redeem multiple Office 365 subscriptions, you extend the amount of time for your subscription, up to a maximum of 5 years. This doesn't increase the number of devices you can install Office on or increase the amount of online storage that's available with the subscription.
If you got a physical box or card, look for your 25-character product key.
If you didn’t get a physical box or card, check your email for a receipt including the product key.
Go to https://office.com/setup and, if prompted, sign in using the Microsoft account that’s associated with your Office 365 subscription.
Tip: It’s important that you use the same Microsoft account that you use to sign into your current Office 365 subscription because this determines which subscription will be upgraded.
Enter your product key. When selecting your country or region, we recommend that you choose the country or region where you live or do your banking.
The Subscription extended page appears and shows the new date that your subscription ends.
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