Microsoft Office for Mac License Guide: Installation and macOS Upgrades
Question details
The user wants to know how Microsoft Office for Mac licenses are managed during macOS upgrades and whether a new purchase is required when transitioning to a 64-bit OS.

- Product
- Microsoft Office for Mac
- Device & OS
- macOS
- Scenario
- Upgrading macOS or transitioning to a 64-bit operating system while maintaining access to Microsoft Office applications.
- Observed behavior
- The user needs clarity on whether their current Office license remains valid after a system upgrade and how to handle 32-bit vs. 64-bit compatibility constraints.
Ensure you have the login credentials for the Microsoft account used to purchase your original Office for Mac license.
Reinstall Office Using Your Linked Microsoft Account
Because your license is linked to your Microsoft account, you do not need to buy Office again after a macOS upgrade.
Office licenses are permanently tied to the Microsoft account used during the initial purchase. As long as your specific Office version is supported by your new macOS, you can simply download and reactivate it.
Go to the Microsoft Account website (account.microsoft.com) and sign in using the email address linked to your Office purchase.
Navigate to the 'Services & subscriptions' section from the top menu to locate your active Office for Mac license.
Click the 'Install' button next to your Office product to download the latest installer compatible with your current macOS version.
Open the downloaded package file, follow the on-screen installation prompts, and sign in with your Microsoft account when prompted to activate the software.

Address 32-bit vs 64-bit Compatibility on Modern Macs
Modern macOS versions no longer support 32-bit applications, requiring a 64-bit version of Office to function.
Try WPS Office for Mac Without Expensive Licenses
If your older version of Microsoft Office is no longer supported on your upgraded Mac and you do not want to purchase a new expensive license, WPS Office is the perfect solution. It is fully compatible with modern 64-bit macOS versions, lightweight, and completely free.
- 1. Download the Installer: Visit the official WPS Office website and download the setup package for Mac.
- 2. Install on Your Mac: Open the downloaded .dmg file and drag the WPS Office icon into your Applications folder.
- 3. Open Your Files: Launch WPS Office and instantly open your existing Microsoft Office documents without any formatting loss.

Frequently Asked Questions
Do I have to buy Microsoft Office again if I upgrade my Mac to a new operating system?
No, your Microsoft Office license is permanently tied to your Microsoft account, not the macOS version. You can reinstall the software on your upgraded macOS without purchasing it again, provided your specific Office version is still supported by the new OS.
Why won't my Microsoft Office 2011 work after my recent macOS upgrade?
Microsoft Office 2011 is a 32-bit application. Starting with macOS Catalina (10.15), Apple completely dropped support for all 32-bit apps. Additionally, Microsoft officially ended all support and updates for Office 2011 in October 2017.
Can I transfer my Office for Mac license to a completely new Mac computer?
Yes. You will need to uninstall Office from your old Mac first. Then, log into your Microsoft account on the new Mac, navigate to the 'Services & subscriptions' page, and download the installer to activate it on the new device.




