Microsoft Office can still be installed and run on macOS Mojave (10.14.6), although official support for the latest versions has shifted to newer macOS releases. Mojave is compatible with Microsoft Office 2019 and Microsoft 365 (with some limitations on the very latest features). This guide covers the safest, most reliable methods to install Office on your Mac running macOS 10.14.6.
Method 1: Install Office 365 (From the office list build site)
Go to the Office 365 release build site and find build no 16.27 (19071500).
Install the software run one of the apps, It might prompt you to download certain fonts to open the login portal for 365. Once installed login and register the software using your 365 license package. If it fails to allow the login (reboot) then try again.
You might get the option to update however this might not be advisable as your at the basic limit of the software. Remember Mojave was the last 32 bit macOS so lots of things wont work on this version of Mac.
Method 2: Install Office 2019 (One-Time Purchase)
Office 2019 is the last perpetual license version fully compatible with Mojave.
Option A: Digital Download (from Microsoft)
- Purchase Office 2019 Home & Student or Home & Business from Microsoft Store.
- After purchase, go to your account → Services & subscriptions.
- Click Install next to Office 2019.
- Download the .pkg installer.
- Run the installer
Alternative: Use Office Online (Free, No Install)
If you don’t need full desktop apps:
- Go to https://office.com
- Sign in with a Microsoft account
- Use Word, Excel, PowerPoint in your browser
Limited features, but great for basic editing.
Security Warning
- Mojave is unsupported by Apple → No security patches.
- Office on Mojave receives limited updates → Critical security fixes may stop.
- Recommendation: Use a virtual machine or dual-boot with a newer macOS if possible.
Summary
| Method | Best For | License |
|---|---|---|
| Microsoft 365 | Ongoing updates, multiple devices | Subscription |
| Office 2019 | One-time purchase, offline use | Perpetual |
| Office Online | Free, light use | Free |
You can successfully install and run Microsoft Office on macOS Mojave 10.14.6 using Microsoft 365 or Office 2019. While functional, consider upgrading your OS for long-term security and compatibility.