How to Fix the ‘Invalid Response’ Error When Syncing iTunes to iPhone?

itunes sync errorUsers of old iPhone models may get the ‘Invalid response was received from the device’ error when trying to sync their device to iTunes. USB related connectivity issues are the culprit causing this problem. Depending on the error number/message, this problem may have a specific solution.

Error 13, 14, 35 and 50 (or -50)

If you get errors number 13, 14, 35 and 50, make sure there are no hardware related issues. Try each of the below solutions, syncing your iPhone to iTunes after each step.

  1. If the iTunes app is already running, exit and relaunch it.
  2. There might be a conflict between iTunes and third-party security application running on your computer. Uninstall ‘external’ security applications and try again.
  3. Check the reliability of your USB cable, computer, and network.
  4. Try restoring your iPhone, iPad or iPod device to factory settings.
  5. Make necessary software updates.

Error 9, 2001–2011 or ‘iPhone has timed out’ in iTunes

If the problem lies in the USB connection, users will get error 9, 2001-2011 or ‘iPhone has timed out’ alerts. Most likely, the iPhone will unexpectedly disconnect while syncing to iTunes. To solve these issues, check the connection between your iPhone and Mac or Windows PC. Use one of the steps listed below:

  1. Check if you have the latest version of iTunes running on your computer.
  2. Make sure the USB cable is properly plugged into both sides (into the handheld iOS device and computer). Unplug the cable and connect it again to both devices.
  3. Avoid indirect connection of the cable to a third-party device like USB hub, keyboard or monitor. Plug the cable into the USB port on the computer directly.
  4. Quit virtualization applications like Parallels or VMWare. If not properly configured or out of date, these programs can hinder the USB connection.
  5. Restart both the computer and iOS device.
  6. For a non-Apple computer, check if the firmware and USB card driver is up-to-date.
  7. Try using the native Apple cable instead of using a third-party cable or an accessory.
  8. If your iOS gadget shows Connect to iTunes screen, you may need to force-restart the device, and then restore it.
  9. Unplug other USB devices, leaving only the keyboard and mouse. After that, reconnect your handheld iOS device. If that works, plug the other USB devices in one by one.
  10. Instead of using USB, try to sync using a wireless connection.

Errors 4, 6, 1630–1641, 3000–3999, or 9000–9999

In case users get the errors number 4, 6, 1630-1641, 3000+ and 9000+, most likely there is a conflict between iTunes and third-party security application running on the computer. In case you fail to launch iTunes, sync your iOS device, use Home Sharing option or download the desired content, most certainly security software is an obstacle. Security applications developed by third-party vendors can hinder the connection between iTunes and Apple servers or synchronization with iOS devices.

If the USB connectivity problem persists, or you get other error numbers, consult Apple Support.

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