"iTunes was unable to load dataclass from Sync Services"

Hi, I have iPod Touch 2nd gen 32 gb, everytime I plug my iPod to computer and after it finished auto-sync my iPod, an error message appear saying "iTunes was unable to load dataclass from Sync Services", I haven't do anything to my iPod yet. . . Can anyone help me with this?? T_T

I've had a similar problem but on a Mac. Here's what I just reported to Apple:
1. I plug in my iPod Touch 2G to MacBook Pro running OS 10.6.1.
2. iTunes launches.
3. Error message appears: "itunes was unable to load dataclass information from SYnc Services. Reconnect or try again later." I hit ok.
4. Another error message launches: "AppleMobileDeviceHelper quit unexpectedly." I hit ignore.
5. iPod syncs.
So the support article regarding the error message on Windows doesn't help me. The iPod seems to be synchronizing all right, but it's annoying getting the error messages. Any ideas, anyone?

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Itunes was unable to load provider from sync services...

itunes was unable to load provider from sync services... and on top of that when i click on any apps i download it looks like its going to open for a split sec and then go back to where u click the apps in the menu. from what i read they are two different bugs but i havnt came across any fixes that work

Doublechecking ... you've also worked through the following document?
iTunes for Windows: "Unable to load data class" or "Unable to load provider data" sync services alert

TS1538 iTunes was unable to load provider from Sync Services

Hi all,
Everytime I plug my iPhone into the USB, iTunes pops a message up saying:
iTunes was unable to load provider from Sync Services.
Reconnect or try again later.
Uninstalled iTunes and installed latest version, still happens. Renamed the ..\AppData\Roaming\Apple Computer\MobileSync folder so it has to be re-created and still doesn't work.
Any ideas?

Doublechecking ... you've also worked through the following document?
iTunes for Windows: "Unable to load data class" or "Unable to load provider data" sync services alert

Just updated to IOS 7 and two issues: First when I connect my iPhone to my computer I get this error message:itunes was unable to provider data from sync services".

Just updated to IOS 7 and two issues:
First when I connect my iPhone to my computer I get this error message:itunes was unable to provider data from sync services". I'm not sure what this really means...
The second issue is when I try to select "Manually Manage Music"
The iPhone "My iPhone" is synced with another iTunes libary on "MY-PC". Do you want to erase this iPhone and sync with this iTunes library? An iPhone can be synced with only one iTunes library at a time. Erasing and syncing replaces the contents of this iPhone with the contents of this iTunes library."
So... I don't want to do that, but I do what to be able to Manage my music. I'm not sure what it means by being synced to another iTunes unless it means to an older version of itunes?
Anyone have any ideas?

I cannot address the sync services error right now, but the error that you receive when you change from sync to manually manage music is what happens when you change. Once you change to manually manage music, it erases all of the music and will only put the music that you want on the phone, content that you manually drag over to it. See if this support document helps you out. http://support.apple.com/kb/HT1535

"Backup session failed" and "Unable to load dataclass from sync services"

I don't know what is causing these two errors to show up whenever I plug my iPod Touch in, but now I can't backup my iPod, but strangely it still syncs fine. Under the diagnostics tool, all tests are passed except for the last one in terms of Ports in the iPhone/iPod Connectivity Tests. It says No iPhone or iPod found.

I've had a similar problem but on a Mac. Here's what I just reported to Apple:
1. I plug in my iPod Touch 2G to MacBook Pro running OS 10.6.1.
2. iTunes launches.
3. Error message appears: "itunes was unable to load dataclass information from SYnc Services. Reconnect or try again later." I hit ok.
4. Another error message launches: "AppleMobileDeviceHelper quit unexpectedly." I hit ignore.
5. iPod syncs.
So the support article regarding the error message on Windows doesn't help me. The iPod seems to be synchronizing all right, but it's annoying getting the error messages. Any ideas, anyone?

Receiveing "Unable to load data from Sync Services" message following iOS 5 Upgrade on iPhone 4 w/ Windows Vista, iTunes 10.5.1. How do I repair?

I upgraded my phone to iOS 5 yesterday. Lost several apps which I restored through my Purchased list in the iStore. Now when I try to sync the phone using iTunes, I receive an error message advising iTunes is unable to load data from Sync Services, and to disconnect and try again later. Have tried again later...no difference. After I acknowledge the error, iTunes continues to say it is Syncing the phone, but it continues to idle.
I have an iPhone 4. I am running iTunes 10.5.1.42 on a Windows Vista system.
What do I need to do to clear this up?

http://support.apple.com/kb/TS2690

When I connect my iTouch to my PC (windows 7) an error message is displayed reading "iTunes was unable to load dataclass information from sync services. Reconnect or try again later".

When I connect my iTouch to my PC (windows 7) an error message is displayed reading "iTunes was unable to load dataclass information from sync services. Reconnect or try again later". I have completely uninstalled and then reinstalled iTunes. I have also completely reset my iTouch to factory defaults. I have even followed all the advice provided previously to other forum member with the same problem. Nothing seems to work. Please help me someone.

I'm getting the same problem with both my IPad 4 and iPhone 5
Just started a few weeks back, Since then I have had two Itunes updates.
Is this something Apple is aware of and trying to fix?

ITunes was unable to load dataclass information from Sync Services

Hi,
I have Iphone 3GS with the latest version 3.1.3 and iTunes 9.1. After i uograded my iPhone to the latest version i am not able to sync with the iTunes and receive the message "iTunes was unable to load dataclass information from Sync Services, Reconnect or Try later". I am using Windows XP with Symantec Endpoint protection.
I have tried following steps to troubleshoot the problem but all my attempts have failed,
1. Uninstall iTunes by Removing, iTunes, QuickTime, BonJour, iPhone congiguration Utility and Bonjour. Remove all the iTunes and related folder from the C:/ drive
2. Restart the computer and intall the latest version of iTunes and Quicktime
3. Restore the iPhone to the factory settings using iTunes
4. Restart the system as well as hard Boot the iPhone (Hold Start and Wake/Sleep Button)before connecting again
5. Repeat the Steps 1 and 2 after restoring the iPhone
I am still getting the same error and now I can't even open the first page for iPhone in iTunes when I connect it to my computer. All my content is still in iTunes but everything is lost on the iPhone.
I searched the Apple support and they talk about problem with the Symantec Endpoint. I have the latest version of Symantec endpoint way above what is mentioned on the Apple support page.
Can someone please help me, it seems restore worked for most of the people facing this issue, but for me even restore is not working.
With Regards,
Ankur

I got a present of an itouch. This is my first time back to apple after 5 years. I cant get my itouch to sync due to dataclass error on Windows XP pro. I have installed the latest version of itunes 9.2.1.
WHAT IS THE POINT IN OWNING A DEVICE FOR PLAYING MUSIC WHEN YOU CANT LOAD THE MUSIC !!!!!
Does anyone have a solution or alternatively (shock horror) Apple could actually get its AR*E in gear and fix the problem. I would also suggest that Apple would post a friggen solution on its website, but no that may be too much to ask.
very frustrated. any help gratefully received otherwise the touch gets thrown out.
thanks

ITunes was unable to load dataclass information from Sync Services-Solution

Hello all. I recently upgraded to iTunes 9.1.1.12 on a laptop with Windows XP Pro and the latest iPhone OS (as of May 16,2010). Right after that, I started getting the "iTunes was unable to load dataclass information from Sync Services" error message. After I dismissed that window, it would go ahead and indicate that it was synching for a minute or two, and then indicate (in iTunes) that it was backing up the iPhone. This will run forever unless cancelled and the phone would not synch.
After reading various solutions that worked for others (install Mobile Me, reinstall itunes, run diagnostics, all with numerous reboots in between), this is what worked for me:
1) Open up Windows Services, and stop the Apple Mobile Device and iPod Service, and mark them as manual (as opposed to Automatic).
2) Deinstall iTunes
3) Delete the c:\program files\common files\apple folder (and all sub folders within). This is where the services are stored, and when I did all of these steps without doing this step, it didn't fix my problem. By deleting this folder, you insure that the iTunes install reinstalls these. You should see the services that were stopped in step 1, running again after the install is done. Note: I don't use Safari or QuickTime on my laptop, so I can't say whether or not this step would have any impact on those apps.
4) Reinstall iTunes.
5) Connect the iphone to your computer.
6) At this point, I still got the dataclass error, so I immediately cancelled the synch.
7) Run the diagnostics for the iphone (connectivity and synch).
8) At this point, two DOS windows launched, and I did get another error about being able connect to the synch server.
9) Closed the error message and disconnected the iphone (the phone at this point did not indicate that a synch was occurring).
10) Reconnected the iphone and, voila, it's been working fine ever since.
Hope this helps someone else out until Apple deals with the 9.1.1.12 (and .11) issues with synching.

Either do Windows Control Panel → Administrative Tools and then picking "Services" or typing "Services.msc" in the Run command on Start menu.

ITunes was unable to load dataclass information from Sync Services. Reconne

I'm getting the following error on iTunes 8 when quitting:
"iTunes was unable to load dataclass information from Sync Services. Reconnect or try again later."
Anyone else seeing this?
Don

I started getting the annoying “iTunes was unable to load dataclass information from Sync Services. Reconnect or try again later.” error when i installed iPhone 3.0 beta onto my 1G iPhone. I have uninstalled iTunes (version 8.1), uninstalled Apple’s Mobile Device Support and reinstalled both of them but that did not fix the problem. I have also installed an older version of iTunes but that did not help as well. The error is not just annoying, i was not able to restore from my iPhone backups. I made a mistake in getting iPhone 3.0 beta onto my iPhone and instead of “update”, i chose “restore”. That wiped out all the App Store applications that i had installed. I could easily re-install the applications but there was no way for me to restore the saved data for some of the apps like eWallet and Gas Cubby. Until iPhone 3.0 beta is jailbroken, restoring a backup is the only way that i am aware of that can restore the app data.
From the Console log, i noticed these errors were generated whenever an iPhone is connected to my Mac Pro:
3/19/09 10:57:50 PM [0x0-0x17a17a].com.apple.iTunes[4049] MobileDevice: readcallback: Could not receive message
3/19/09 10:58:02 PM [0x0-0x11011].com.apple.systemuiserver[233] DigiHub:sendChargingCommandToDevice RequestExtraPower(kUSBPowerDuringWake) returned 0
3/19/09 10:58:02 PM [0x0-0x11011].com.apple.systemuiserver[233] DigiHub:sendChargingCommandToDevice sending command with sleep: 0, wake 0
3/19/09 10:58:02 PM [0x0-0x11011].com.apple.systemuiserver[233] DigiHub:sendChargingCommandToDevice sending command with sleep: 0, wake 0
3/19/09 10:58:05 PM [0x0-0x17a17a].com.apple.iTunes[4049] Parent: Can't write length for data
3/19/09 10:58:05 PM [0x0-0x17a17a].com.apple.iTunes[4049] Parent: write to child failed, trying to create child again...
3/19/09 10:58:05 PM [0x0-0x17a17a].com.apple.iTunes[4049] Exec of child with pid 4100 failed with error 255
3/19/09 10:58:05 PM [0x0-0x17a17a].com.apple.iTunes[4049] Exec for child /System/Library/PrivateFrameworks/MobileDevice.framework/Versions/Current/Apple MobileDeviceHelper.app/Contents/MacOS/AppleMobileDeviceHelper failed or inexplicably returned
3/19/09 10:58:05 PM [0x0-0x17a17a].com.apple.iTunes[4049] Parent: Can't write length for data
3/19/09 10:58:05 PM [0x0-0x17a17a].com.apple.iTunes[4049] Parent: Can't talk to child
So i decided to get rid of everything in /System/Library/PrivateFrameworks/MobileDevice.framework and re-installed Apple Mobile Device Support. Voila, that worked!

Help! "iTunes was unable to load dataclass information from Sync Services."

Help! what to do? When you connect iphone, the program writes this message "iTunes was unable to load dataclass information from Sync Services."

It could be possible the service is disables. Go into control panel of your pc, into administrative services, then click in services. There you will see a list of services. Find the apple and itunes services. See if they say disabled. If they do, right click on it, then another dialogue pops up. It will stay stopped. Scroll in there and put automatic. Then hit apply. Then click on start. It will then apply the service and you should be able to connect your ipod.
Have you registered this other ipod for iTunes on your pc?

ITunes was unable to load dataclass information from sync services...Help?

i have tried numerous times to get my ipod to sync... it keep showing that message... but it wont load... help??

It could be possible the service is disables. Go into control panel of your pc, into administrative services, then click in services. There you will see a list of services. Find the apple and itunes services. See if they say disabled. If they do, right click on it, then another dialogue pops up. It will stay stopped. Scroll in there and put automatic. Then hit apply. Then click on start. It will then apply the service and you should be able to connect your ipod.
Have you registered this other ipod for iTunes on your pc?

"itunes was unable to load dataclass information from sync services"-crash

I recently got the 2g iPod touch. Before i could sync it initially for a few times. But today, I plugged in my iPod and it won't sync. iTunes works perfectly when i don't plug it in. Also my old 30g iPod classic works fine when plugged in. I'm not sure if iTunes is missing some file for the Touch, or if it's the touch thats broken. The other day, somehow multiple .dll files became currupted, including those attached to Microsoft Office and flash. Is it possible that itunes is missing a .dll file for the sync? I have tried repairing itunes, and also uninstalling and reinstalling it. Is there anything to do to fix it?

I recently got the 2g iPod touch. Before i could sync it initially for a few times. But today, I plugged in my iPod and it won't sync. iTunes works perfectly when i don't plug it in. Also my old 30g iPod classic works fine when plugged in. I'm not sure if iTunes is missing some file for the Touch, or if it's the touch thats broken. The other day, somehow multiple .dll files became currupted, including those attached to Microsoft Office and flash. Is it possible that itunes is missing a .dll file for the sync? I have tried repairing itunes, and also uninstalling and reinstalling it. Is there anything to do to fix it?

ITunes 9.1 was unable to load dataclass information from Sync Services.

Everything was working perfectly fine on 9.0, then i upgraded to 9.1 version and my iPod Touch 3G stopped syncing properly (error as in subject). I tried many things, checked dll's, restarted services, everything without success. SO...
I uninstalled every single apple program and couple non applce. Deleted every Apple related file, even all those hidden in users/common files/app data folders. Double checked everything and restarted PC. THEN I downloaded full version of iTunes 9.1 64bit and installed.
Aaaand I restarted everything, lunched iTunes, plugged iPod in. Some Apple drivers installed themselves, then iTunes was frozen for couple minutes. Finally iPod shown in iTunes. I tried to sync and... BAM. Still broken, still same error "iTunes 9.1 was unable to load dataclass information from Sync Services. Reconnect or try again later"
Please help, my iPod is useless. Can u release new, working iTunes?

OK i have to say, i finally fixed it. Now its fully working without ANY problems, here is what i did (before trying this u should probably do this http://support.apple.com/kb/HT1923):
1. Unplug every external Card Reader.
2. Unplug every Card Reader in your PC (they are plugged into motherboard)
3. Unplug every USB Hub.
4. Unplug every USB Drive or USB HDD.
5. Plug in Ipod Touch/iPhone.
6. Go to Device Manager.
7. Search for "USB Mass Storage Device" in Universal Serial Bus Controler.
8. Right click on it and UNINSTALL.
9. Search for "Scan for hardware changes", click on it and wait a bit.
10. Turn on iTunes and check if its working.
Now it should work like a charm.

TS2529 iTunes was unable to load data class information from Sync Services. Reconnect or try again later is the error message I am getting when i connect my iphone 4 to my windows based computer. Any help out there?

iTunes was unable to load data class information from Sync Services. Reconnect or try again later. This is the message when I try to connect my iphone 4 to my computer. If anyone could help me with this, I would appreciate it.

iOS: Device not recognized in iTunes for Windows
http://support.apple.com/kb/TS1538
iOS: Device not recognized in iTunes for Mac OS X
http://support.apple.com/kb/ts1591

"iTunes was unable to load dataclass from Sync Services"

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