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How to Install and Link Microsoft 365 on an Older MacBook Air
Question details
The user needs to install Microsoft 365 and link their account on an older MacBook Air, but the current installer requires a newer macOS version.
- Product
- Microsoft 365 for Mac
- Device & OS
- macOS (older versions)
- Scenario
- Installing Office applications and activating a subscription on an outdated Mac operating system.
- Observed behavior
- The current Microsoft 365 installer blocks the installation because it only supports the three most recent macOS versions.
Verify your exact macOS version by clicking the Apple menu and selecting 'About This Mac' to determine which legacy Office build you will need to download.
Install a Compatible Older Office Build
Since the newest Microsoft 365 requires one of the latest three macOS versions, you must download a legacy installer from Microsoft's update history.
Microsoft periodically drops support for older macOS versions. By default, the main Microsoft 365 download button provides an installer only compatible with the three latest macOS releases. To run the apps on an older MacBook, you must manually find an older release package.
Click the Apple logo in the top-left corner of your screen and select 'About This Mac' to see your exact macOS version (e.g., macOS Catalina 10.15).
Go to the Microsoft 'Update history for Office for Mac' page (https://learn.microsoft.com/en-us/officeupdates/update-history-office-for-mac) in your web browser.
Scroll through the release dates to find a version that was still compatible with your specific macOS version, then click the download link for the full installer package.
Run the downloaded installer. Once installed, launch Word or Excel and sign in with the Microsoft account associated with your active Microsoft 365 subscription to link the device and activate the software.
Use WPS Office on Older MacBooks
If your Mac is too old to run the latest Microsoft 365 apps smoothly, or you are having trouble finding the right legacy installer, WPS Office is a lightweight, highly compatible alternative. It requires fewer system resources while fully supporting Microsoft Office file formats.
- 1. Download WPS Office: Visit the official WPS Office website and download the Mac installer.
- 2. Install the Application: Open the downloaded .dmg file and drag the WPS Office icon into your Applications folder.
- 3. Open Your Files: Launch WPS Office and seamlessly open, edit, and save your existing Microsoft Office documents.
Frequently Asked Questions
Which macOS versions does the current Microsoft 365 support?
Microsoft 365 for Mac generally only supports the three most recent major versions of macOS. When a new major macOS version is released by Apple, Microsoft drops support for the oldest of the three.
Will an older build of Office for Mac still receive security updates?
No, older builds downloaded from the update history page usually do not receive new security patches or feature updates. They are provided as-is for compatibility with older operating systems.
Can I use the web version of Microsoft 365 on an old Mac?
Yes, if your web browser (like Safari, Chrome, or Edge) is reasonably up to date, you can log in to Microsoft365.com to use the online versions of Word, Excel, and PowerPoint without installing any desktop applications.
Do I need a different license for older Office builds?
No, your existing Microsoft 365 subscription will successfully activate the older compatible desktop apps once you sign in with your linked Microsoft account.
