Install Latest Compatible Office 2019 for Mac on macOS Sierra
Question details
The user needs to find and install a version of Office 2019 Home and Business that works on macOS Sierra 10.12, and prevent it from auto-updating to an unsupported build.

- Product
- Microsoft Office 2019 for Mac
- Device & OS
- macOS Sierra 10.12
- Scenario
- Installing and activating Office 2019 on a Mac running an older operating system without forcing incompatible updates.
- Observed behavior
- Modern Microsoft Office 2019 installers do not support macOS Sierra, and leaving Microsoft AutoUpdate enabled will automatically download unsupported versions that fail to launch.
Uninstall any currently broken or partially installed newer versions of Microsoft Office from your Mac's Applications folder before attempting to install the older compatible release.
Download Office Version 16.29 and Disable Microsoft AutoUpdate
Manually download the verified 16.29 installer from Microsoft's servers, activate the software, and switch AutoUpdate to manual to maintain compatibility with macOS Sierra.
Microsoft typically only supports the three most recent versions of macOS. For macOS Sierra (10.12), the final compatible build for Office 2019 is version 16.29. Installing this specific package ensures your Office apps run smoothly without crashing.
Navigate to the official Microsoft Office for Mac release history page in your browser. Locate and download the Office 16.29 installer package, which is typically named 'Microsoft_Office_16.29.19090802_BusinessPro_installer.pkg'.
Double-click the downloaded .pkg file and follow the macOS installation wizard. Once installed, launch Microsoft Word from your Applications folder, click 'Sign In', and enter your Microsoft account credentials to activate your Home and Business license.
Immediately after activation, keep Word open and look at the top Apple menu bar. Click on 'Help' and select 'Check for Updates' from the dropdown menu. When the Microsoft AutoUpdate window appears, uncheck 'Automatically keep Microsoft Apps up to date' or select 'Manual' to stop the system from downloading incompatible newer builds.

Try WPS Office for hassle-free performance on older Macs
If you are tired of fighting version compatibility issues and manual update configurations on macOS Sierra, WPS Office is an excellent, lightweight alternative. It provides a familiar user interface and robust tools without the complex version management of Microsoft Office.
- 1. Download for Mac: Visit the official WPS Office website and download the Mac version of the software.
- 2. Install the application: Open the downloaded file and drag the WPS Office icon into your Applications folder.
- 3. Open your files: Launch WPS Office and directly open your existing Word, Excel, or PowerPoint documents to continue your work.

Frequently Asked Questions
Why does the latest Office 2019 installer fail on macOS Sierra?
Microsoft updates its software to rely on features and security protocols only available in newer operating systems. Because macOS Sierra (10.12) is an older system, newer Office 2019 builds lack the underlying OS framework support required to execute.
Will I still get security updates if I stay on Office version 16.29?
No. Because you must turn off Microsoft AutoUpdate to prevent the installation of unsupported versions, your Office suite will remain on build 16.29 and will not receive any further security or feature updates.
What happens if Microsoft AutoUpdate accidentally upgrades my Office applications?
If an unsupported version is installed over your working 16.29 build, your Office applications (Word, Excel, PowerPoint) will likely display an error or bounce in the dock and fail to open. You will need to delete the apps from the Applications folder and reinstall the 16.29 package.




