the iphone ".." could not be synced because the sync session failed to finish

I am also having this same problem...and it is very frustrating....anyone have any suggestions?

Try to uncheck "Sync Photos with..." in the Photos tab of iTunes, confirm deletion of photos from device, click the Apply button and then re-sync all photos again (after checking the ""Sync Photos with..."). That should work (at least it did so for me).

Yes samaki it work for me.

Didn't work for me. I'm syncing after unchecking everything but apps to try to regain the 15.6 GB of "Other" and now I'm getting this "failed to finish" message.

For me it worked but it wasn't the photos but the ringtones. Once I've unchecked the sync of them it worked. Not very smoothly. On the first sync after it got over the error message the iPhone got hung up in the copying process. But after disconnecting the iPhone and restarting both the Mac and the iPhone it was finally ok.

Perfect! That did the trick, many thanks for the tip!

Even unchecking Apps didin't work. What ended up working was a full restore. Everything is good now and I got back the 15.6 GB of "Other" space that had gone missing.

Still not can not sync. 😟 any new solutions?

I'm still not having any luck syncing my iPhone 4 either. I've tried a full restore, unchecking music, apps, etc. and still nothing. I'm trying ANOTHER restore now.

For me that was the ringtones. I uncheck the ringtones and then reckeck it again, and it finally OK now. Hope this helps.

🙂 I got my sync to work finally. All I had to do is reboot, then I could sync my app changes.

I got my sync to work finally. All I had to do is reboot, then I could sync my app changes.

Solved "sync session failed to finish" by resstarting and performing a restore to iPhone. Choose from my backup and all is well and all my data, music, apps, etc are back just fine.

Thanks everyone!

iPhone 4 cdma on iOS5 using iTunes 10.5(141)

Hope this helps!

I am getting the same message .

I have tried restoring ... its not working ... still 😟

This is frustrating .

Why do I upgrade softwear ... only to have issues becuase it changes settings that I don't know how to fix ?

I should have left it with the 4 ....

Hi mdenoon,

I understand your frustration. I had the same problem. The reason why I kept getting the "sync session failed to finish..." was because I was using an application called iToner. I found out that it was causing the sync issues with my iPhone because it isn't yet updated to work with iTunes 10.5 and iOS5.

Once I disabled iToner, my iPhone synced like normal. What you need to do is disable any apps that you may have that you use with iTunes 10.5 and iOS5 and your iPhone should sync as normal. I'm not saying that you use iToner like I do. It could be any app that you might be currently using that accesses both iTunes and your iPhone. If that application isn't updated to work with iTunes 10.5 AND iOS5, that's probably where you will run into the sync issues.

I hope this helps.

Mike.