An invalid response was received from the device?

For at least the past year, I haven't been able to sync my phone with iTunes. It either freezes, or, recently, has been giving me an "Invalid response blah blah" error. I made two threads to no response. Does anyone know how to fix this? Can Apple make software that isn't complete ****?

iPhone 4S, iOS 6.0.2

Posted on Jun 24, 2013 2:31 PM

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Question marked as Top-ranking reply

Posted on Jun 30, 2013 7:59 PM

From this support document http://support.apple.com/kb/TS3694


iTunes cannot connect to the iPhone because an invalid response received from the device

This error occurs when there are problems communicating through USB. This may be resolved by following the steps for errors 13 or 14 above.


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

These errors are typically resolved by performing one or more of the steps listed below:

  1. Perform USB isolation troubleshooting, including trying a different USB port directly on the computer. See the advanced steps below for USB troubleshooting.
  2. Put a USB 2.0 hub between the device and the computer.
  3. Try a different USB 30-pin dock-connector cable.
  4. Eliminate third-party security software conflicts.
  5. There may be third-party software installed that modifies your default packet size in Windows by inserting one or more TcpWindowSize entries into your registry. Your default packet size being set incorrectly can cause this error. Contact the manufacturer of the software that installed the packet-size modification for assistance. Or, follow this article by Microsoft: How to reset Internet Protocol (TCP/IP) to reset the packet size back to the default for Windows.
  6. Connect your computer directly to your Internet source, bypassing any routers, hubs, or switches. You may need to restart your computer and modem to get online.
  7. Try to restore from another known-good computer and network.
120 replies

Dec 2, 2016 6:26 PM in response to ChiefTolu

All - I have not read all of the responses, but I did spend 6 hours with Apple support (I am appreciative of their Customer Service) and wanted to share what I learned. Please know that I will not view any responses, and don't need angry comments. (1) my computer is old, but my software is not, a new computer is not needed (2) I could not uninstall all of the itunes software in order to update itunes (3) Apple had me create a new user on my computer account and try to download the new itunes - some how, this enabled me to remove the "itunes software update" component that would not budge (from my original user account) and indicated that my malware and windows defender were keeping itunes from being updated (4) I removed Malware and turned off the defender and was able to upload itunes successfully in the original user account (5) I turned back on Defender and reloaded malware and then deleted the second user account. I hope this helps someone.

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