User level: Level 1 (4 points)Greetings,
I purchased MicroSoft 365 but can't used it, my Mac is outdated (BigSur operating system). What is the lasted/oldest Mac operating system that can be use the updated MicroSoft 365?
Posted on Oct 13, 2026 5:38 PM
User level: Level 7 (28,946 points)Oct 13, 2026 5:44 PM in response to HF55
You’ll need to contact Microsoft for that information. Oh wait, it’s right there on the internet...
Microsoft 365 (Office) for Mac requires macOS Sonoma (14) or later to receive current feature and security updates (starting with update 16.101).
User level: Level 10 (756,437 points)Oct 13, 2026 5:42 PM in response to HF55
Sonoma.
(265224)
User level: Level 9 (55,707 points)Oct 14, 2026 12:27 AM in response to HF55
Microsoft has a policy of only supporting the three most recent versions of macOS.
Although the current versions of Office and 365 apparently will run on Sonoma, I wouldn't count on that lasting for long. The three most recent versions of macOS are now Sequoia, Tahoe, and Golden Gate. Which implies that the next time Microsoft updates Office or 365, they're likely to cut off any version of macOS before Sequoia.
Microsoft Support – Upgrade macOS to continue receiving Microsoft 365 and Office for Mac updates
Originally posted at discussions.apple.com/thread/256375690