How to Recover Microsoft 365 Subscription After Reinstalling on Mac
Question details
The user needs to reactivate their Microsoft 365 subscription on a Mac after reinstalling the operating system and applications.
- Product
- Microsoft 365
- Device & OS
- Mac
- Scenario
- Reinstalling macOS and Microsoft 365 applications from scratch.
- Observed behavior
- The active subscription appears missing, and attempting to re-enter the original product key results in an 'already used' error message.
Ensure you have the email address and password for the Microsoft account originally used to purchase or redeem your Microsoft 365 subscription.
Reactivate via Microsoft Account Sign-In
Since product keys can only be redeemed once, you must reactivate your software by signing in with the linked Microsoft account.
A Microsoft 365 product key is solely used to bind the license to your Microsoft account. Once redeemed, the key becomes invalid for future use. Therefore, after a Mac wipe or reinstallation, you must authenticate using your account credentials rather than the product key.
Open your web browser and navigate to the Microsoft account Services & subscriptions page. Sign in with the account you used to purchase Microsoft 365 and verify that your subscription is currently listed as active.
If the currently installed apps fail to recognize your subscription, open your 'Applications' folder and drag the Microsoft 365 apps (Word, Excel, PowerPoint, etc.) to the Trash to completely remove them.
Click the Apple menu in the top-left corner and select 'Restart' to ensure all background Microsoft services and cache files are fully cleared from macOS.
Return to your Microsoft account Services & subscriptions page, click 'Install premium Office apps', download the installer package, and run it to reinstall the software.
Launch Microsoft Word or Excel from your Launchpad. When the 'What's New' or activation screen appears, click 'Get Started' and select 'Sign In'. Enter your Microsoft account credentials to restore your subscription.
Try WPS Office for Mac Without Subscription Hassles
If you are struggling with Microsoft 365 activation issues or want to avoid ongoing subscription costs, consider switching to WPS Office. It provides a lightweight, free alternative with a familiar interface and seamless compatibility for your daily tasks.
- 1. Download the App: Visit the official WPS Office website and download the Mac version installer.
- 2. Install on Mac: Open the downloaded DMG file and drag the WPS Office icon into your Applications folder.
- 3. Open Your Files: Launch WPS Office and immediately open, edit, and save your existing Office documents.
Frequently Asked Questions
Why does my product key say it has already been used?
A product key is a one-time code used to link the Microsoft 365 license to your Microsoft account. For all future installations on your Mac, you must activate the software by signing in with that specific account, not by entering the key again.
How do I find which Microsoft account is linked to my subscription?
Try signing in to the Microsoft account page (account.microsoft.com) with your various personal, work, or school email addresses. Navigate to the 'Services & subscriptions' tab to see which account officially holds the active license.
Do I need to repurchase Microsoft 365 if I wiped my Mac?
No. As long as you have an active subscription or a lifetime license tied to your Microsoft account, you can reinstall and reactivate the applications on your Mac at no additional cost.
What if I forgot the password to my Microsoft account?
You can use the 'Forgot password' link on the Microsoft sign-in page to reset your credentials using an alternate email address or phone number associated with your account.
