This is a requirement of the Mac operating system — Application programs must be installed on the startup volume. If there is no room on the startup volume you need to free up space by deleting unneeded content & moving user documents to a different volume. Office doesn't prevent OS updates or upgrades but lack of free space definitely can do so.
how to install office 365 locally to drive different than c on my Mac?
Elliott Welsch
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I need to install office to my SSd hard drive as my main drive will not allow me to update operateing system with office installed. Want to send to drive not c: or mac hard drive.
WHy can i not choose when installing?
Microsoft 365 and Office | Excel | For business | MacOS
Microsoft 365 and Office | Excel | For business | MacOS
A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data
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Bob Jones AKA CyberTaz MVP 429.9K Reputation points2025-12-11T20:58:36.8966667+00:00