Apple macOS iCloud Sync Issue

First reported on 9to5mac on June 27, 2026.

Users are experiencing issues with iCloud syncing on their Apple macOS devices. The issue is caused by a compatibility problem with the iCloud app. Users can fix the issue by updating the iCloud app to the latest version.

What it looks like

• iCloud sync issue
• Data not syncing

How to fix it

1. Wait for the vendor to ship a fix — there is no user-side workaround yet.

Affected products

• Apple macOS

Sources

• Apple will launch 15+ new products this fall, here’s what’s coming — rss:9to5mac

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Search terms covered: apple macos icloud sync issue, icloud not syncing on mac