There may be third-party software installed that modifies your default packet size in Windows by inserting a TcpWindowSize entry into your Registry. If your default packet size is set incorrectly it can cause this error. Contact the manufacturer of the software that installed the packet size modification for assistance.

Look Here for all the resolutions and cases:iTunes for Windows: Troubleshooting security software issues

This error  can occur if the device is manually disconnected during the restore process. This issue can be resolved by performing USB isolation troubleshooting, using a different USB dock connector cable, trying another USB port, restoring on another computer, or by eliminating conflicts from third-party security software.
Click here to see resolutions, and see the other type of errors that can be fixed using this

Things You Can Try:
-Perform USB isolation troubleshooting, including a different USB port directly on the computer.
-Put a USB 2.0 hub between the device and the computer.
-Eliminate third-party security software conflicts by following iTunes for Windows
-Try to restore from another known-good computer and network.
-Sometimes The update package is a .ipsw (IPod or IPhone SoftWare). This file is actually just a .zip renamed .ipsw.Use a program like "Object Fix" (Freeware) to verify the integrity of the file prior to commencing with any new updates. You will have to keep trying to download it until you get a error free file. Once you have a CRC error free file this problem will go away.

1. Make sure that iTunes is Closed.
2.Locate the Hosts file, navigate to.

C:\WINDOWS\system32\drivers\etc
Then open "Hosts" with notepad,and delete where it says 74.208.10.249 gs.apple.com, then save.
For More Help:Fix Error For Windows

1. Click Go to Folder... from the Go menu.
2.Enter /etc into the input field and click the Go button.
3. Locate the hosts file in the folder that opens then control+control (Control + Click Mouse) to bring up the contextual menu.
4.Choose Open With then TextEdit from the menus that appear.
5.Once TextEdit has opened up the hosts file. Delete where it says 74.208.10.249 gs.apple.com, then save (Basically replace with the file you already have on there)
For More Help: Fix Error on Mac

1. Download iReb
2. Open it up, then there should be two tabs on top.
3. Click on the one that says "Recovery Mode Loop Fixes/SHSH Blobs Grabber"
4. Then after clicking on it, click on "Set Auto-Boot True (Fixes 1015 Errors / Recovery Loops)"

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1.Uninstall iTunes, Quicktime, Bonjour, Apple Devices (and similar items)
2.Delete any associating files
3.Download the LATEST version of itunes
(found at: Apple - iTunes - Download iTunes Now)
4.Restore your device