TS2776 iTunes was unable to load data class information from Sync Services

iTunes was unable to load data class information from Sync Services

Did so, still no-go.
Configuration:
Win 7 Pro x64 SP1
iTunes 10.7.0.21
iPhone 4S iOS 6.0 (10A403)
iPad 1 3G-WiFi 64G iOS 5.1.1 (9B206)
- fresh install W7 + updates
- fresh instal x64 iTunes (as offered on apple.com)
- direct USB PC-cable-iDevice (no USB hub)
- user account is Administrator class
- no error message under different Admin account, but also no data in library (same appleID used) :-(
- disabled ZoneAlarm (Checkpoint firewall) does not matter
- msconfig and limited start as mentioned in advanced troubleshooting - no resloution
- reinstall iTunes - no resolution
- iTunes display message from topic but after OK they sync at least something to/from iDevice
- iTunes also shows that they backed-up iDevice but Device Backups in Edit-Preferences-Devices shows nothing
- time to time shows "iTunes could not backup the iPhone XYZ because a session could not be started with the iPhone"
- Home Sharing turned off - no resolution, turned ON - still same + share not visible on iDevices
- previous installation of Windows + iTunes (older version, probably 10.6) - no problem
It just *doesn't* work!

Similar Messages

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    To troubleshoot Sync Services with Outlook and iTunes, please follow the troubleshooting in the article below.
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    http://support.apple.com/kb/TS2776
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    Alex H.

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  • ITunes was unable to load data class information from sync services.

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    Doublechecking. You've tried the following document?
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  • I get this message when i try to sync and download my iphone:  itunes was unable to load data class information from sync services, reconnect or try again later.  what does that mean and who do you fix it

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    http://support.apple.com/kb/TS2690?viewlocale=en_US&locale=en_US

  • HT1386 my ipad won't sink; I continually get message:  itunes was unable to load data class information from Sync Services. Reconnect or try again later.  I have done both several times and still receive same messaage.

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    IOS: Syncing with iTunes
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  • I am receiving an error message when starting up iTunes: iTunes was unable to load data class information from sync services. Reconnect or try again later. (what does this mean?)

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  • I am having problems syncing my ipod touch. I keep getting this message. iTunes was unable to load data class information from sync services. Reconnect or try again later

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    Error message missed off previous post - "iTunes was unable to load data class information from sync services"

  • I'm trying to sync my i phone. I haven't synced it in a few months, but the notice that comes up is  itunes was unable to load data class information from sync services..what does it mean?

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    Try here:
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    If not successful see the previous discussion on the right side of this page with the green checkmark.

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    Refer to this article:
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    http://support.apple.com/kb/TS2690

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    John L316 wrote:
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