iOS Error 0xE8000122: Causes and Solution

What Does Error 0xE8000122 Mean

Error 0xE8000122 occurs when attempting to sync, update, or restore an iOS device (iPhone/iPad) via iTunes (on Windows) or Finder (on macOS). It is typically accompanied by a message such as "Could not restore iPhone. An unknown error occurred (0xE8000122)."

This error is not related to data corruption on the device but indicates a communication problem between the computer and the iOS device or a software conflict.

Causes

Error 0xE8000122 can be caused by the following:

1. Faulty cable or USB port: damaged cable, non-original accessory, malfunctioning port, or use of a USB hub.
2. Outdated software: old version of iTunes (on Windows) or outdated macOS (on Mac).
3. Conflict with other programs: antivirus, firewall, or backup software (e.g., iMazing) may block the connection.
4. Driver issues (Windows): outdated or corrupted USB controller drivers.
5. Apple Mobile Device Service failures (Windows): the service responsible for communication with iOS devices is not running or is malfunctioning.
6. Locked device: if a passcode is active on the iPhone/iPad but the computer is not trusted, or the device is in a non-functional state.

Method 1: Basic Hardware Check

Most often, the error is caused by cable or port issues. Follow these steps:

1. Use an original Apple cable (Lightning or USB-C) or a certified accessory.
2. Connect the cable directly to the computer's port, avoiding USB hubs and front-facing ports.
3. Try a different USB port (preferably a port on the motherboard if using a desktop PC).
4. Ensure the device has sufficient charge (at least 50%).
5. Unlock the iPhone/iPad and when prompted, tap "Trust" on the device screen.

If the issue persists, proceed to the next method.

Method 2: Update Software and Restart Services

Outdated software is a common cause of sync errors.

For Windows (iTunes):

1. Update iTunes:
   • Open iTunes → Help → Check for Updates.
   • Or download the latest version from the official Apple website.
2. Update Windows:
   • Settings → Update & Security → Check for updates.
3. Restart the Apple Mobile Device Service:
   • Press Win + R, type services.msc.
   • Find the Apple Mobile Device Service.
   • Right-click → Restart.
   • If the service is stopped, select "Start".

For macOS (Finder):

1. Update macOS:
   • Apple menu → System Settings → Software Update.
2. Restart your Mac after updating.

Method 3: Disable Conflicting Software

Antivirus and firewall software often block the connection between an iOS device and a computer.

1. Temporarily disable your antivirus and firewall (e.g., Windows Defender, McAfee, Kaspersky).
2. If using third-party backup software (iMazing, AnyTrans), close it completely.
3. Attempt the sync/restore again.
4. If the error disappears, add exceptions for iTunes/Finder and Apple services in your antivirus settings.

⚠️ Important: Do not leave your antivirus disabled for long. Re-enable protection after a successful sync.

Method 4: Run iTunes/Finder with Elevated Privileges

Sometimes it's necessary to run iTunes (Windows) as an administrator:

1. Close iTunes.
2. Right-click the iTunes shortcut.
3. Select "Run as administrator".
4. Connect your device and try to sync.

On macOS, this is usually unnecessary, but ensure your user account has administrator rights.

Method 5: Reinstall USB Drivers (Windows)

If the issue is driver-related:

1. Disconnect the iPhone from the computer.
2. Press Win + X → "Device Manager".
3. Expand the "Universal Serial Bus controllers" section.
4. Right-click "Apple Mobile Device USB Driver" (or similar) → "Uninstall device".
5. Disconnect and reconnect the iPhone. Windows will automatically reinstall the driver.
6. Restart the computer.

Method 6: Restore via Recovery Mode

If the error occurs when trying to restore the firmware, use recovery mode:

1. Back up your data via iCloud or iTunes (if possible).
2. Put the device into recovery mode:
   • iPhone 8 and later: Quickly press and release the volume up button, then the volume down button. Hold the side button until the recovery mode screen appears.
   • iPhone 7/7 Plus: Hold both the volume down and power buttons simultaneously.
   • iPhone 6s and earlier: Hold the Home and power buttons.
3. Connect the device to the computer. iTunes/Finder will prompt you to "Restore".
4. Click "Restore" and wait for completion. The device will reinstall iOS without data loss (if the backup was current).

💡 Tip: If restoring doesn't help, try performing it on another computer to rule out driver or software issues.

Prevention

To avoid recurrence of error 0xE8000122:

1. Use only original or certified cables.
2. Regularly update iTunes (Windows) or macOS (Mac).
3. Avoid installing unverified software that may conflict with Apple Mobile Device Service.
4. Back up via iCloud before major iOS updates.
5. Avoid USB hubs—connect the device directly to the computer.
6. Periodically restart your iPhone/iPad and computer to clear temporary glitches.

If the error appears regularly, check the cable for physical damage and try another computer for diagnostics.