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How to Download an Older Version of Office for Mac on macOS Catalina
Question details
The user needs to find and install a compatible version of Microsoft Word and Excel for an older Mac running macOS Catalina.
- Product
- Microsoft Office for Mac
- Device & OS
- macOS Catalina 10.15.7
- Scenario
- Installing Microsoft Office on an older Mac operating system that no longer supports the latest Office releases.
- Observed behavior
- The latest Microsoft Office for Mac release is incompatible with macOS Catalina, requiring the installation and activation of a legacy build like version 16.66.1.
Ensure you know your Mac's exact operating system version (Apple menu > About This Mac) and have your Microsoft account credentials or product key ready for activation.
Download and Activate Office for Mac Version 16.66.1
Version 16.66.1 is the latest Microsoft Office build that officially supports macOS Catalina 10.15.7.
Because Microsoft continuously updates Office for Mac, newer versions require more recent macOS releases. For users on macOS Catalina, you must manually download an older installer from the official Microsoft update history repository.
You do not need a legacy license to use this older version. You can use a current Microsoft 365 subscription or an Office 2021 license to activate the software.
Navigate to the official 'Update history for Office for Mac' page on the Microsoft Learn website using your web browser.
Scroll through the list of release dates and version numbers until you find version 16.66.1 (or 16.66), which is the designated release for macOS Catalina.
Click the download link for the full 'Office suite' to get all applications, or choose individual application packages like 'Word' or 'Excel'.
Double-click the downloaded .pkg file and follow the on-screen installation prompts to install Office on your Mac.
Launch Microsoft Word from your Applications folder. When the activation window appears, select 'Sign In' and enter the Microsoft account associated with your Microsoft 365 subscription or Office 2021 purchase.
Use WPS Office on Your Mac Without Version Hassles
If you cannot activate an older version of Microsoft Office or want a more straightforward productivity solution for macOS Catalina, WPS Office is a free, lightweight, and highly compatible alternative. It offers familiar tools that work seamlessly on Mac without complex version matching.
- 1. Download WPS Office: Visit the official WPS website and download the Mac installer.
- 2. Install on Your Mac: Open the downloaded file and drag the WPS Office icon to your Applications folder.
- 3. Open Existing Documents: Launch WPS Office and directly open your existing Word, Excel, or PowerPoint files to continue working seamlessly.
Frequently Asked Questions
Can I use a new Microsoft 365 subscription to activate older Office versions on macOS Catalina?
Yes, Microsoft allows you to use a current Microsoft 365 subscription or an Office 2021 license to activate older compatible builds, such as version 16.66.1, on macOS Catalina.
Where can I find safe download links for previous Office for Mac versions?
You can find secure and official download links for all previous versions on the 'Update history for Office for Mac' page hosted on the official Microsoft Learn website.
What happens if I try to install the latest Office for Mac on Catalina?
The installer will typically block the installation or display an error message stating that your macOS version is unsupported, as the newest Office releases require a more recent version of macOS to run.
Do I need to buy an older product key to use Office 16.66.1?
No. Microsoft does not provide product keys for discontinued software. However, activation does not require the installed software to be the absolute newest version; a valid modern license will work perfectly.
