iCloud Error Codes
iCloud Drive synchronization errors, photo sync errors, and account quota limits.
How to Fix iCloud Error 4001
Learn how to resolve iCloud error 4001, which occurs when your iCloud account fails to authenticate due to incorrect credentials, expired sessions, or two-factor authentication issues.
How to Fix iCloud Error 4010
Resolve iCloud error 4010, which occurs when your iCloud storage quota is exceeded and prevents files, photos, or backups from syncing to the cloud.
How to Fix iCloud Error 4014
Fix iCloud error 4014, which prevents large files from uploading to iCloud Drive due to file size limits, network interruptions, or corrupted upload sessions.
How to Fix iCloud Error 4016
Resolve iCloud error 4016, which appears when your iCloud sync session has expired or the authentication token is no longer valid, preventing data from syncing.
How to Fix iCloud Error 4020
Fix iCloud error 4020, a connection timeout error that interrupts file transfers between your device and iCloud servers during uploads or downloads.
How to Fix iCloud Error 4023
Resolve iCloud error 4023, which occurs when iCloud Drive detects a file conflict during sync and cannot automatically merge changes from multiple devices.
How to Fix iCloud Error 4026
Fix iCloud error 4026, which prevents iCloud Keychain from syncing saved passwords, Wi-Fi credentials, and secure notes across your Apple devices.
How to Fix iCloud Error 4031
Fix iCloud error 4031, which occurs when an iCloud backup fails integrity verification, indicating corrupted or incomplete backup data on Apple's servers.
How to Fix iCloud Error 4035
Resolve iCloud error 4035, which occurs when iCloud Drive cannot access a folder due to denied file system permissions or restricted sharing settings.
How to Fix iCloud Error 4040
Resolve iCloud error 4040, which occurs when a file or folder that your device expects to find in iCloud has been deleted remotely or cannot be located on Apple's servers.
How to Fix iCloud Error 4044
Fix iCloud error 4044, which occurs when the iCloud Drive daemon process (bird or cloudd) crashes unexpectedly, halting all sync operations on your device.
How to Fix iCloud Error 4050
Resolve iCloud error 4050, which occurs when iCloud Photos sync stalls and stops uploading or downloading photos and videos to your library.
How to Fix iCloud Error 4055
Fix iCloud error 4055, which occurs when your email client cannot connect to iCloud Mail servers, preventing you from sending or receiving iCloud email.
How to Fix iCloud Error 4060
Fix iCloud error 4060, which appears when your local device does not have enough disk space to download or sync files from iCloud Drive.
How to Fix iCloud Error 4070
Resolve iCloud error 4070, which occurs when your iCloud account is locked due to a security alert triggered by suspicious activity or too many failed sign-in attempts.