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Install Compatible Microsoft Office on macOS Sierra 10.12.6
Question details
The user needs to install Microsoft Office on a Mac running macOS Sierra 10.12.6, but the current Office releases do not support this older operating system.
- Product
- Microsoft Office for Mac
- Device & OS
- macOS Sierra 10.12.6
- Scenario
- Setting up or reinstalling an office suite on an older Mac computer that cannot be upgraded to a newer macOS version.
- Observed behavior
- The latest Microsoft Office installers block installation because they require macOS 10.13 or later, preventing the user from running Office applications.
Before proceeding, ensure you have a valid Microsoft Office license for the older build and enough disk space on your Mac for the installation.
Download and Install Office Legacy Build 16.42
Use the official Microsoft CDN link to download version 16.42, which is the most recent legacy build known to be compatible with macOS Sierra.
Because newer versions of Office for Mac require macOS 10.13 or later, you must rely on a legacy build. Version 16.42 provides a stable experience for macOS Sierra 10.12.6 users.
Copy and paste this official Microsoft URL into your browser to download the package: https://officecdn.microsoft.com/pr/C1297A47-86C4-4C1F-97FA-950631F94777/MacAutoupdate/Microsoft_Office_16.42.20101102_BusinessPro_Installer.pkg
Locate the downloaded .pkg file in your Downloads folder and double-click it to launch the installation wizard.
Follow the on-screen prompts to install the software. Once completed, open Word or Excel and sign in with your Microsoft account credentials to activate your license.
Download and Install Office Legacy Build 16.29
If version 16.42 fails to install or activate, you can use the slightly older 16.29 build as a reliable alternative.
Use WPS Office on Your Mac for a Seamless Experience
If you are struggling with legacy installers and macOS compatibility issues, WPS Office offers a free, lightweight, and highly compatible alternative. It provides comprehensive tools for Word, Excel, and PowerPoint documents without the heavy system requirements that block installation on older Macs.
- 1. Download WPS Office for Mac: Visit the official WPS Office website and click the download button for Mac.
- 2. Install the application: Open the downloaded .dmg file and drag the WPS Office icon to your Applications folder.
- 3. Start editing: Launch WPS Office from your Launchpad, open your existing Microsoft Office files, and start editing immediately.
Frequently Asked Questions
Why can't I install the latest Microsoft Office on macOS Sierra?
The newest versions of Microsoft Office require macOS 10.13 (High Sierra) or later. macOS Sierra 10.12.6 lacks the required system frameworks and security protocols necessary to run the latest updates.
Will a legacy version of Office for Mac still receive security updates?
No, older legacy builds like 16.29 or 16.42 are no longer officially supported with active feature or security patches from Microsoft. You should use them with caution or consider an alternative office suite.
Do I still need an active license to use an older Office version?
Yes, you still need a valid Microsoft 365 subscription or a permanent Office license that covers the specific legacy release in order to activate the software after installation.
