Audio & Video Software forum

General discussion

iTunes was unable to load data class info from sync services

by wrangler4x4 / April 16, 2010 9:25 PM PDT

Started receiving this error ever since I updated iTunes to 9.1.079.

Havn't been able to sync my itouch since. Please Help.

Discussion is locked
You are posting a reply to: iTunes was unable to load data class info from sync services
The posting of advertisements, profanity, or personal attacks is prohibited. Please refer to our CNET Forums policies for details. All submitted content is subject to our Terms of Use.
Track this discussion and email me when there are updates

If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem. Also please exercise your best judgment when posting in the forums--revealing personal information such as your e-mail address, telephone number, and address is not recommended.

You are reporting the following post: iTunes was unable to load data class info from sync services
This post has been flagged and will be reviewed by our staff. Thank you for helping us maintain CNET's great community.
Sorry, there was a problem flagging this post. Please try again now or at a later time.
If you believe this post is offensive or violates the CNET Forums' Usage policies, you can report it below (this will not automatically remove the post). Once reported, our moderators will be notified and the post will be reviewed.
Collapse -
iTunes was unable to load data class info from sync service
by ajdiaz / August 21, 2010 9:35 AM PDT

I was also getting this message constantly for over 2 weeks, and refused to having to install everything. I have iTunes 9.2.1 on Windows XP,and iPhone 4 iwth iOS 4. I did a whole bunch of stuff to fix this, so don't really know which one specifically helped, but here they are:

1) Uninstalled MobileMe Control from Add/Remove Programs. Downloaded it and installed it again.
2) Renamed every single DLL in the directory C:\Program Files\Common Files\Apple\Mobile Device Support\bin. Every single one, gone.
3) Went to Add/Remove Programs and Repaired (not remove, but repaired) every single Apple program, including Mobile Device Support, Apple Support, and iTunes.
4) Rebooted and iTunes started working again.

Oddly, the DLLs I renamed in the Mobile Device Support\bin remained renamed. I would think that the repair would have copied them over again. But no. They are not there anymore, and everything still works.

Hope this helps someone.


Collapse -
Fix for iTunes on Mac
by ken-ng / March 15, 2011 8:20 PM PDT
Popular Forums
Computer Newbies 10,686 discussions
Computer Help 54,365 discussions
Laptops 21,181 discussions
Networking & Wireless 16,313 discussions
Phones 17,137 discussions
Security 31,287 discussions
TVs & Home Theaters 22,101 discussions
Windows 7 8,164 discussions
Windows 10 2,657 discussions


Help, my PC with Windows 10 won't shut down properly

Since upgrading to Windows 10 my computer won't shut down properly. I use the menu button shutdown and the screen goes blank, but the system does not fully shut down. The only way to get it to shut down is to hold the physical power button down till it shuts down. Any suggestions?