When a computer function works in another app, user account or port, keep the repair inside the failing context. For Mac iCloud Drive sync, first check sync status and verify a file on iCloud.com before moving or deleting it.
What this covers
- Mac iCloud Drive sync with this exact failure state
- Diagnosis across cloud capacity/account versus local storage, network and optimization state
What it does not cover
Try in this order
0 of 4 completedCapture the exact failure state
ReversibleName the failing app, user account, port or peripheral and one that still works. Expected behavior: reconcile Desktop, Documents and app files with the intended Apple Account.
Isolate the component boundary
ReversibleCheck sync status and verify a file on iCloud.com before moving or deleting it. Swap only the app, account, cable, port or user profile while keeping the computer unchanged. Boundary to separate: cloud capacity/account versus local storage, network and optimization state.
Correct only the proven cause
ReversibleCorrect quota/network or let sync finish on power; preserve local copies first. Repair the isolated app, user profile, driver binding or physical path.
Verify and stop safely
ReversibleRetest both contexts after sign-in and one cold restart. Never disable Desktop/Documents sync or delete files until another copy is verified.
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