Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hello, thank you for reaching out to Microsoft Q&A.
Microsoft 365 for Mac, Office 2024 for Mac, and Office 2021 for Mac support the three most recent major versions of Apple’s macOS.
As of September 2025, those versions are macOS Tahoe, macOS Sequoia, and macOS Sonoma.
If you're running macOS 12 (Monterey), you can run Office **16.88, *(***which should be compatible with your existing OS). At the History page, look for the Office Suite Installer, with Teams.
https://learn.microsoft.com/en-us/officeupdates/update-history-office-for-mac
Download the full installer, not the separate package.
Install the Office packages and sign in with your Microsoft account to use Office.
*** Ensure you remove all previous Office apps from the Applications folder before installing older versions.*
Let me know if you still need more help.