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How to fix an unknown error occurred (4014)

What is error 4014? What are its causes? How to fix it?

iPhone, iPad, iPod touch could not be restored - an unknown error occurred (4014) is an error that appears when you try to restore your iPhone, iPad or iPod touch in iTunes, but the attempt failed. It can also happen when you try to upgrade the iOS version of your device.

The most common reasons behind this error are:

  • Antivirus software settings;
  • Outdated iTunes software installed on your computer;
  • Viruses;
  • The lightning cable;
  • USB port of your computer;
  • Lightning port of your iOS device;
  • Corrupt iTunes files.

Discover our detailed and step-by-step solutions to fix this iTunes error message and restore or upgrade your device successfully.

Select specifications which apply:

Click on this if you use an iPhone.

Click on this if you use an iPad.

Click on this if you use an iPod touch.

Click on this if you tried all the other solutions, but none of them worked.

  1. Install the latest version of iTunes

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  2. Plug the USB (lightning) cable in another USB port

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  3. Contact Apple's support team

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  4. Force−restart your iPhone

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  5. Force−restart your device

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  6. Use another USB lightning cable

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  7. Scan the computer for malware (viruses)

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  8. Put your device into DFU mode and then restore it via iTunes

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  9. Clean both the computer's and device's connection ports

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  10. Update your iOS device's operating system

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  11. Ensure that your Internet connection is stable

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  12. Update or restore your device from another computer

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  13. Buy another USB (lightning) cable

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  14. Free up enough storage space on your device

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