If your iPhone or iPad recently stopped syncing data through iCloud, Apple has now released an update that should fix the issue.
The newly released iOS 26.4.1 and iPadOS 26.4.1 updates address a bug introduced in iOS 26.4 that prevented some apps from properly syncing cloud data.
While Apple’s official release notes simply mention “bug fixes,” developers have confirmed the update resolves a problem with iCloud change notifications.
What caused the iCloud syncing issue
Developers discovered that devices running iOS 26.4 stopped receiving change notifications from iCloud.
These notifications are critical for apps built on Apple’s CloudKit, which many apps rely on to keep data updated across devices.
Because of the bug, some apps were unable to detect new cloud data and therefore stopped syncing correctly.
The issue affected both third-party apps and Apple services.
Apps affected by the bug
Several apps built using CloudKit were impacted, including the popular writing app Drafts.
Apple’s own Apple Passwords was also affected, particularly the shared passwords feature that relies on iCloud syncing.
Because the bug existed at the operating system level, developers could not fix it themselves and had to wait for Apple to release an update.
How to fix iCloud sync problems on iPhone or iPad
The solution is straightforward: update your device to the latest software.
Update your device
- Open Settings
- Tap General
- Tap Software Update
- Install iOS 26.4.1 or iPadOS 26.4.1
After installing the update, affected apps should resume normal syncing with iCloud.
The issue was already fixed in iOS 26.5 beta
Interestingly, users running the beta version of iOS 26.5 were not affected by the problem.
The bug had already been addressed in early iOS 26.5 beta builds, which is why Apple was able to push the fix quickly in the public iOS 26.4.1 release.
Should you update right away?
If you’re running iOS 26.4 or iPadOS 26.4 and have noticed apps failing to sync data across devices, installing iOS 26.4.1 or iPadOS 26.4.1 should resolve the issue.
For most users, updating the system software is all that’s needed to restore normal iCloud syncing.
