Itunes thinks Iphone is synched to another machine after OS X reinstall

after clean-installing os X on my imac, itunes states that my iphone is synched to another machine.
this is quite a hassle as i don't want to have to delete the contents of my iphone and start all over again.
how do i tell itunes that no, my iphone is not synched to another machine, and have it let me leave my phone alone?
cheers

First reinstall iTunes. Here is Apple's troubleshooting guide for your problem: http://support.apple.com/kb/TS1591

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HT204088 How how can I synch my ipod + iphone music to my new computer? I get the same error "my ipod or iphone is synched with another itunes library.An Ipod can be synched with only one itunes library at a time. What would I like to do Erase and Synch

How can I synch my ipod & iphone music (purchased from itunes on my old laptop) to my new laptop? I keep getting the same message on my itunes on my new laptop: " The ipod/Iphone is synched with another itunes library. An ipod/iphone can be synched with only one itunes library at a time. What would you like to do - Erase and Synch or Transfer Purchases?" What do I do?
A couple of other items:
1) I am guessing Apple does not keep a history of all my music purchases? As I did not have my entire library backed-up anywhere, and relying on the music I have on my ipod and my iphone as my only source of itunes music....I have lost over 500 songs!!!
2) I used to have an Apple account under another account name, and since have switched to a new account name. Is there anyway to find the history of purchases from my old Apple account name and transfer these over to my new account name and onto my new laptop?
I hope someone can help, I am having a very difficult time trying to obtain answers. Angie

The iphone/ipod is NOT a storage/backup device. Not maintaining a backup copy is a big mistake.
You can transfer itunes purchases from your iphone/ipod to your computer:
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IPhone 4 "synched with *another* library"?

I lost my iTunes library when I upgraded to 10.6 but, followed Apple's instructions & reinstalled the library. Now, my iPhone won't synch with iTunes & I get a message saying tht it is "synched with another library." I don't want to lose my music again. Any ideas?

All of your music is on your computer. Sync it to the iphone.

ITunes thinks iPhone has more music than it really does, and won't sync

I have an iPhone 4 running iOS 7.1, and am running iTunes 11.1.5 on Mavericks.
I was using iTunes Match on the iPhone, but I don't want to do so any more because I have acquired a lot of music that I can't upload to iTunes Match. (This is because my wife has her own iTunes Match account, and Apple won't allow two different iTunes Match accounts to be used simultaneously on the same computer, even under different user accounts. So because my wife uses her iTunes Match account under her user account on the same computer, I cannot activate my own iTunes Match account and upload my additional music.)
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I have ticked "Sync only checked songs and video". In my iTunes library, only ten songs are checked. So I am attempting to put only ten songs onto the phone (for now).
I go over to the "Music" tab of the phone. I check "Sync Music". Suddenly a huge blue bar appears at the bottom, and it now says I'm over capacity by 975.8 MB. And yet at the top of the screen, next to "Sync Music", it also says "10 songs". So it knows I only want to put 10 songs on the phone, and yet it thinks that this is too much for the 10.99 GB free space on the phone.
Heading over to the "On This iPhone" tab of the phone, I see that all of the music that I previously deleted from the phone is showing up here, even though it's no longer on the phone. If I double-click on any of the items, they don't play, and an exclamation mark symbol appears next to them, indicating that the tracks aren't actually present. If I right-click on any of the items, the only options I have are to play them, get info, check the rating, or show in iTunes Store. There's no delete option.
It looks like, as long as I don't try to sync the iPhone, iTunes recognises that there's no music on it, and it's got over 10 GB of free space. But as soon as I try to sync it, iTunes thinks that the old, deleted music is still on it, and that I therefore have no space to put anything more on. So it refuses to sync any music to the phone, even though there's plenty of space for it.
I have tried ejecting the phone, restarting it, and remounting it. I have also tried signing out of my account on the phone and signing back in. It makes no difference. I don't know what else to do.
So I can't sync the iPhone. What's going wrong, and what can I do to make it work?

Same problem here. Mine is a iPhone 5s......

ITunes thinks iPad is owned by another iTunes Library.

Hey,
My iTunes thinks that my iPad (first generation) is owned by another iTunes library. It definetely isn't. How do I get rid of this problem without erasing and syncing? And could this be related to the new motherboard and hard drive installed in my system?
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Supervision Mode seems to embed itself into the operating system. In Apple Configurator, I had to unassign myself from the iPad. That restarts the iPad. This is something your IT Administrator has to do, but I doubt they will take it out of Supervisor mode as that means the devices can be stolen and used by anyone.
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When I plug my iphone into itunes, itunes thinks that it is my ipad. Help?

Hi there,
Hy there,
Try fixing this problem by folowing these steps:
1'st step is to go into the device manager
2 step is to go to portable devices (it is rught under network adapters)
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I've got a dead Mac that held my iTunes account. All content is safe in external drives. I am overseas and not getting a new Mac for a couple of months, but would like to upgrade my iPhone and iPad to IOS5. I've got another computer (Win7) that I could use to accomplish this, but do not want to wipe these phones in the process. What are my options at this point?

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Select the InstallESD.dmg file from your desktop as the image to burn. Insert a blank DVD and wait for the the image to be burned.
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Click on the Restore tab and drag the InstallESD.dmg file to the Source. Drag the USB partition to the Destination. Hit the Restore button and it will create the bootable USB drive with the OS X Lion installer

Itunes says "device already synched to another computer" ...but it isn't and won't recognize the ipod at all.

ipod isn't recognized by computer that it was originally synced to. It hasn't been synched to any other. How can I move music on ipod to itunes on new computer without access to itunes for the ipod itself?

See this older post from another forum member Zevoneer covering the different methods and software available to assist you with the task of copying content from your iPod back to your PC and into iTunes.
https://discussions.apple.com/thread/2452022?start=0&tstart=0
B-rock

ITunes thinks iPod is synced with another library

Hello guys,
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You can tell because you received the message. You have to options:
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Syncing to a "New" Computer or replacing a "crashed" Hard Drive: Apple Support Communities
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iTunes: Syncing media content to iOS devices and iPod

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Fix...
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Open iTunes when this iPad is connected
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In iTunes, go "Help > Run Diagnostics". Uncheck the boxes other than Network connectivity tests, as per the following screenshot:
... and click "Next".
When you get through to the final screen:
... click the "Copy to Clipboard" button and paste the diagnostics into a reply here.

How do I Restore from Time Machine after I have reinstalled my system software (Snow Leopard and then Lion) ?, How do I Restore from Time Machine after I have reinstalled my system software (Snow Leopard and then Lion) ?

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I just came back from the Apple store where the Genius Bar did a full reinstall of Snow Leopard to repair an issue with my computer. The techs weren't sure if the issue I was experiencing (freezing of the keyboard and touchpad) was because of hardware or software but opted for a software issue since I've had the keyboard and top case replaced 3 times and yet the issue persists. My question is this: if I restore my computer from my time machine back-up, will I reintroduce and software error that may have been responsible for the freezing, or does time machine not transfer the OS files? Thanks!

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Message was edited by: V.K.

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30gB ipod video when put into its cradle is not recognised by iTunes - it tells me that my iPOd is synched to another PC - however, it has NEVER been synched to another machine and only ever synched to my PC!!
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Try resetting the iPod. This reboots the iPod. It does not erase the iPod.
http://support.apple.com/kb/HT1320

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iTunes loses iphone via wifi and find it after rebooting device.
How to fix it?

Hi Elianovsky,
I apologize, I'm a bit unclear on the exact issue you are having. If you are talking about issues syncing your iPhone to iTunes via WiFi, you may find the troubleshooting in the following article helpful:
iTunes 10.5 and later: Troubleshooting iTunes Wi-Fi syncing
http://support.apple.com/kb/TS4062
Regards,
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Itunes thinks Iphone is synched to another machine after OS X reinstall

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