Q: Sync session failed to start

Worked for me and I learned something new in the process.  I had no idea I was running that many programs at once.  Thank-you very much!!

Worked for me! Thanks, you're the man. I tried soft resetting several times, restarting Itunes, restarting the PC (windows 7); none of that worked and I was dreading a full factory reset until I tried your fix by closing the apps one by one and viola.

Thx.

Great advice from all. Tried all the steps suggested and it worked for me.

Many thanks

Is there any way to do this when my home button is broken? (It isn't working with the accessibility tool)

Thank you  so much know I can sync!!

Thanks Carl your a genius

Carl, thank you!!!!  It was making me crazy!

What I have seen is a suggestion about squirting a LITTLE BIT of DW40 around the home button. That will likely void the warranty.  Here's a "software" fix I would try first:

  http://www.makeuseof.com/tag/iphone-home-button-working-fix/

"

• Launch any app that came pre-installed on your device. I tried it with Notes but you can also launch Calendar, Reminders, or anything else.
• Press and hold your device’s power button for about 4 seconds, until the “Slide to power off” prompt appears.

3. Once this happens, release the power button, and then press and hold the home button instead. This will take around 6-7 seconds, but at the end the prompt will disappear, and the app will force close.

That’s it. These actions should recalibrate your home button, and if you were having problems before, you should feel a significant improvement. My iPad’s home button wasn’t driving me nuts, but it wasn’t at its best either. Doing this definitely seems to have made it more quick to respond.

The article also describes using the "assistive touch" to give you a home button the screen.

See this one too:  http://howto.cnet.com/8301-11310_39-57524891-285/four-ways-to-fix-an-unresponsiv e-iphone-home-button/

Alcohol is less harmful than dw40!!

Here's another - a shot of compressed air!!  Sounds like the safest.

    https://discussions.apple.com/thread/3022587?start=405&tstart=0

Restarting iTunes did the trick for me!

Thanks!  The soft restart didn't work, so I tried restarting iTunes and the phone is currently merrily synching away.

Restarting itunes just solved the problem... Thanks for the help.

Thank you! The soft reset and restarting my itunes worked!

Firts time it has happened to my ipad, but after restarting the device and the itunes, now all works fine, thanks!

Ok so why on earth itunes would keep all those programs running is beyond me, but thanks so much for this fix.

This worked for me also Thanks for the advice.