Hi, Ken Darvell
At the moment, macOS 13 Ventura still appears to be within the supported range for the standalone OneDrive sync app, so the problem may be the installer/update process or leftover OneDrive files on the Mac, rather than the 1 TB storage being removed.
Here are some suggestions you can try:
First, try installing OneDrive from the Mac App Store instead of the Microsoft website installer. If the standalone installer is failing or saying it cannot install in that location, the App Store version may avoid that package installer issue.
If that does not work, check whether OneDrive is still in your Applications folder. If it is there but has a “no entry” symbol or will not open, move it to Trash, restart the Mac, then try the App Store install again.
It is also recommended that you check for old OneDrive leftovers before reinstalling. In Finder, choose Go > Go to Folder, then check these locations:
~/Library/CloudStorage
~/Library/Containers
~/Library/Group Containers
If you see folders clearly named OneDrive or Microsoft OneDrive, move only those to Trash, restart, then reinstall OneDrive.
For the version number, the current standalone OneDrive build listed for Mac is around 26.095.0519 and it shows minimum macOS 13.0, so it should normally include Ventura 13.7.8. I would avoid downloading old OneDrive installers from random websites unless you can verify they are from Microsoft’s own download servers.
Your 1 TB storage is not stored “inside” the Mac app. It belongs to your Microsoft 365 subscription and Microsoft account. Even if OneDrive is removed from the iMac, your files should still be available by signing in at OneDrive on the web. The Mac app is only the sync tool.
Thank you for your patience in reading, I hope this information has been helpful to you.
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