3722 Views 10 Replies Latest reply: Sep 28, 2009 7:47 AM by momthechauffer
I am experiencing almost the exact same thing when synching after upgrading to iTunes 9 and iPod Touch/Phone 3.1.1. The sync starts, but it sometimes stalls at "authenticating iPod" or "syncing iPod".
I unloaded all apps and photos and still the darn thing won't complete a sync session - it just halts. When I hit CTL-ALT-DEL and select iTunes in the application bar, sometimes it restarts for a few seconds and then stops once more.
I did find out, however, that if you can click on the "Restore Factory Settings" on the iPod before iTunes halts, it will erase all data on the iPod and completely sync, correctly, to your requested preferences in iTunes. However, subsequent attempt to sync normally still results in iTunes stalling before completing the session.
Dear Apple, what's the fix already?
First, in iTunes go to Edit/Preferences and click on the Devices tab. Make sure that the "Prevent iPods and iPhones from syncing automatically" is NOT selected.
If that's not the cause, then uninstall iTunes and "Apple Mobile Device Services". Both of these need to be removed (you won't lose your library). Then re-install iTunes and that will also install AMDS.
I dake sure that the "Prevent iPods and iPhones from syncing automatically" is NOT selected.
I uninstalled iTunes and "Apple Mobile Device Services". I then re-installed iTunes 9.0 (along with the automatic installation of AMDS).
Problems of the synch process stalling while "verifying iPod" or "syncing iPod" still continue.
OK, I figured it out.
I removed Windows Live Sync from the system. Judging by the registry errors I was seeing when iTunes was trying to sync, it looks as if iTunes 9 has a problem playing nice with other resident syncing utilities.
After that I removed iTunes 9 and the went ahead and re-installed it, thusly no longer offering any chance of a sync conflict with (now departed) Windows Live Sync.
I actually contacted Apple via their amazing Support Service, they actually call you. I wrote about this in my blog at http://face2facetravel.blogspot.com/
Anyway, the tech guy solved the problem completely.
Exit out of iTunes
Connect the iPod to my laptop
Go into the My Computer link and right click on MANAGE the click on DEVICE MANAGER
Scroll to the Universal Seriel Bus Controller
See if the USB Bus Controller sees the iPod. You do this by disconnecting and then connecting the iPod. If it shows up your are in good shape. 99.99% of the time it will show up.
Click on Disable then make sure you click on the TURN OFF link in the drop down box.
Click APPLY then close out
Connect your iPod, you should see NEW HARDWARE FOUND
Let the computer do its thing
You then should see one or two pop ups asking to install upgraded software, click YES
This part is KEY - let everything install and then when it is totally finished it will either reboot by itself or do a manual reboot
Once I did this everything worked and has worked ever since. THe tech guy said it is the Windows interface that acts freaky wit the Apple iTunes code
Hope this helps and definitely read the blog - you should enjoy it
Disconnect the iPod and reboot your machine.
Ok. I am having the same sort of problems. I plug my ipod touch in and it used to pop up a window saying that it was a camera. I was able to disable that, but it still won't do anything related to itunes or that recognizes it as an ipod. I have tried the previous suggestions, but the USB bus controller doesn't show my ipod on there. I guess i'm part of the .01%. What do I need to do? I have installed and reinstalled itunes 9. I have the latest version of itunes. I have tried putting my ipod in recovery mode, but a windows update manager pops up. When I go through its process, I find that I need to have some CD that I was supposed to get with my ipod. I don't remember getting a CD and if I did, I don't know where it is. Please help.