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Bookmark or Share- Unlicensed Product and activation errors in OfficeIf Office activation fails, you'll see Unlicensed Product or Non-commercial use / Unlicensed Product in the title bar of your Office apps, and most features of Office are disabled. To restore all features of Office, you'll need to fix the problem that's causing activation to fail.
- "This product key has already been used" error in OfficeIf you see the message "This product key has already been used," this means that you've already redeemed your product key and added your Office product to your Microsoft account. Don't worry, this message doesn't mean you can't install or activate Office.
- How do I upgrade Office? - Microsoft SupportIf your current version of Office is a one-time purchase (non-subscription) version of Office such as Office Home & Student or Office Home & Business, to upgrade, you'll need to buy the latest version.
- Change your Office product key - Microsoft SupportThis article applies to Office Home & Business, Office Professional, and individually purchased Office apps. To switch an Office install to or from Microsoft 365, see Switch your Office license. Change the product key for your version. How you change the product key depends on your version of Office. Select your Office version from the tabs below.
- A subscription notice appears when I open a Microsoft 365 applicationHow to get the notifications to stop. Select an error message below to view the steps. "Renew your subscription" or "Subscription expired". You might see one of the following yellow warning bars across the top of the application: Your Microsoft 365 subscription is about to expire, or has expired.
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