"iTunes was unable to load data class information from Sync Services. Reconnect or try again later."
I tried rebooting my computer and fully re-powering the iPhone but still get the error message.
How did I fix the problem?
I actually found that the issue was caused by Trusteer Rapport which is a browser program that most online banks encourage you to use.
I'm not sure why there is a conflict between iTunes and this software but I found that uninstalling Rapport got iTunes sync working again without any problems.
How to uninstall Rapport from Windows 7. Quit your browser, goto the control panel, Click on uninstall program, Select Trusteer Rapport and click Change, Uninstall button at the top. It will come up with a panel where you have to type in some numbers and letters to confirm that you want to stop the program running to uninstall it.
Of course uninstalling Rapport is not ideal as you may want to keep this software if you use online banking.
Hopefully there will be a fix for this soon.
hope this helps you if you get this error.
Andy
