Apple Releases iOS and iPadOS 26.4.1 to Fix iCloud Syncing Bug Affecting Apple Passwords and More

Apple released iOS 26.4.1 and iPadOS 26.4.1 today, delivering a targeted fix for a significant iCloud syncing regression that crept into last month's iOS 26.4 update. The bug, which affected iPhone and iPad users, silently broke the push notification mechanism that many apps rely on to sync data in real time through iCloud. It's the kind of problem that could leave you wondering why your passwords, notes, or reminders aren't showing up where you expect them to.

The update arrives roughly two weeks after iOS and iPadOS 26.4 shipped on March 24. If you've noticed iCloud-powered apps feeling sluggish to update between your devices — or spotted stale data in Apple Passwords — this is the fix you've been waiting for.

iOS 26.4.1 (Build 23E254)

iCloud Sync Bug Fix (CloudKit Push Notifications)

The headlining fix in iOS 26.4.1 addresses a regression introduced in iOS 26.4 that broke CloudKit push notifications — the behind-the-scenes mechanism iCloud uses to alert apps on your iPhone or iPad when new data is available to download.

Under normal operation, when you save something on your Mac or another device, iCloud sends a silent push notification to your iPhone that prompts the relevant app to fetch the updated data. iOS 26.4 broke that notification delivery, meaning iPhones and iPads weren't getting the signal to pull down changes. Data wasn't lost — it was still safely stored in iCloud — but apps wouldn't reflect updates until you manually switched away and back, or relaunched the app entirely.

Apple's Passwords app was among the affected apps, specifically when syncing shared passwords. Developers across a range of third-party apps also reported the issue, and Apple acknowledged the bug after it surfaced widely in developer forums. Apple had already included a fix in the iOS 26.5 beta, but given how broadly the bug affected daily iCloud use, a dedicated point release to address it sooner was the right call.

If you're coming from iOS 26.3 and held off on 26.4 specifically because of this bug, iOS 26.4.1 is safe to install.

iPadOS 26.4.1 (Build 23E254)

iPadOS 26.4.1 carries the same iCloud sync fix. iPad users running iPadOS 26.4 were affected by the same CloudKit push notification regression, so everything described above applies here as well.

Availability

iOS 26.4.1 and iPadOS 26.4.1 are available today for all compatible iPhones and iPads. To install, go to Settings → General → Software Update. The update is free and recommended for all users currently on iOS or iPadOS 26.4.

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