HT201210 could not back up iphone to this computer.  I have bought a new phone iphone 4 and it says the same thing. though I have another iphone 3 that backs up perfectly to this computer every time. why?

I had 2 iPhone 3G's, one of them screwed up and wouldn't recieve service. Up until then when I backed them up to my computer all was good, then one of them would update and all but a screen would pop up and tell me it couldn't back up to my computer.  Recently I replaced the bad tele with an iPhone 4 and it does the same thing while the other iPhone 3G still backs up fine.......What up!!!  Help please.   Don't wanna lose my info..

I banged my head on the wall with the same problem for two days.  Tried everything mentioned, and this worked, finally.  The problem is that the backup files are not where you think they are.
You need to delete the MobilSync backup folder.  I have a Mac.  Went to /Library/Application Support/MobileSync/Backup and deleted the Backup folder. 
Fixed the problem.  Give it a try and good luck!

Similar Messages

Maybe you are looking for