Sync apps back to iTunes library after iTunes reinstall

Hello there,
I recently had to format my PC due to a virus. Now after reinstalling iTunes, I cant resync my many purchased apps back to my PC. The only option it is giving me is to erase the iphone and start again. How can I get my apps back onto my PC as I'm worried that when software version 3.0 comes out, I will loose all my apps after updating?

Did you update your computer's backup or create a backup before reformatting your computer's hard drive which should include your iTunes library?
If not, did you lose all of your computer's data due to this Windows virus? If you lost all data due to this virus, I don't understand why anyone chooses to put up with such a swiss cheese for security operating system that is Windows.
iTunes includes an option to transfer iTunes content from an iPod or iPhone that was purchased from the iTunes store, but this is for iTunes content that was purchased from the iTunes store only.
First you need to re-authorize your computer with your iTunes account with iTunes. After doing so, with your iPhone connected and without syncing, at the iTunes menu bar go to File and select Transfer Purchases From - the name of your iPhone.
If all 3rd party apps do not transfer from your iPhone to your iTunes library, you can re-download the 3rd party apps with iTunes on your computer and you won't be charged again for any 3rd party paid apps as long as you use the same iTunes account to re-download the apps that was used to purchase the apps originally.
In regards to iTunes content, an iPhone can be synced with an iTunes library on a single computer only. When syncing an iPhone with an iTunes library on another computer, all iTunes content on your iPhone that was transferred from a different computer will be erased first. The same applies to photos transferred from your computer to your iPhone via the iTunes sync process. Your iPhone detects your computer as a new or different computer since your computer's hard drive was reformatted.

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Can't play my itunes library after itunes reload

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How do I fix this problem?

the library file may be corrupted.
you could try this:
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edit:
before you do that, try just selecting the iTunes folder (not the library file inside it).

Can I get apps back on boyfriends phone after iTunes deleted and replaced with mine after syncing and upgrading to iOS 5?

Hi,
PLEASE HELP!! Last night my boyfriend asked me to sync his phone as he had purchased a new app and it was required to connect to iTunes to finish installing, so we did this, it took forever!! It also prompted us to upgrade to iOS5, which we did, the sync finished and he unplugged his phone and all of the contacts and apps from my iPhone have moved onto his phone and his apps have disappeared? Is there anyway at all to rectify this at all? I know that w had to restore the phone after upgrading to iOS5 but I am sure that I hit restore from partners phone and not from mine.

iPhones can only be sync'd to ONE computer.
And as it was not running iOS5, it had to have been sync to a computer before he could use it.
So unless it was always backup up to your computer, it is all gone.
You can redownload apps you bought.
Sign into his account on the iphone, and go to appstore.
Go to Updates page,
you can click on purchased and see what you already bought, and can redownload.
In future you should only sync your iphone to one computer.
In iOS5 you can backup online to icloud.
But sadly the data that was on his phone may be gone now that you updated on your computer.
Out of interest, I have never had an app that needs to sync to a computer before it downloads or runs.
What app was it?

I "restored" my itunes library after erase/reinstall and now I can't play them.

This is a continuing issue from last weeks question:https://discussions.apple.com/thread/4176309
I now get this message: "The song could not be used because the original file could not be found. Would you like to locate it?" So, I click yes and it can't seem to be found. I log into my apple account and download all my past purchases again. This fixes a few of the songs, however songs I downloaded from CDs years ago are now not available to me and some purchases from years past via my previous imac. I was told by several Apple Geniuses that my Time Machine would back everything up, and it seems that it has. I restored them, I guess because they show in my library. Only this time they have exc!amation points and say the files can't be found?! How are they listed but not there? Ugh! Did I put the files somewhere I shouldn't have? I guess it's entirely possible that I don't know where they were supposed to be. I don't have these CDs anymore. iTunes and my iPod have made moving them obsolete so I got rid of them. Please don't suggest I download the CDs again because that is an impossibility. I do however need some direction on what I may have possibly done wrong. I'm super frustrated. I tried again just yesterday and can't find where the original files were restored so I can restore from the proper place.

If there is a cure you may find the folks over here have more information for you. Repost your question here:
https://discussions.apple.com/community/itunes/itunes_for_mac?view=discussions

Cannot sync iTunes U files back to computer Library via iTunes

I recently upgraded my computer with a new OS and now I'm trying to sync my files from my iPhone 4 back to the computer. For the Apps I was successful using the File/Transfer purchases from option. This worked great for Apps. When I try to use the same process for transfering the contents of iTunes U files from the iPhone back to the library in iTunes on my computer it doesn't work.
Is there a different process for these files or what am I doing wrong?
Thanks,
Bob

Hello eddymc100, I did a bad thing with my PBG4 when I reloaded by start up disc but did not "save" data. So lost photos, tunes etc.
I did find an application called TouchCopy of which I downloaded a Trial which allowed me to copy only 100 song back from my Ipod. I think they sell the "proper" software which will allow more freedom.

How do I get back my Itunes library after it suddenly disappeared?

Looked at my ITunes library last week to try and make a new playlist but all my years of music/videos etc has disappeared without me doing anything? I have had very bad luck with Time Machine as well and realised not long ago that for 4 years it has only been backing up 'Desktop' and not the whole computer. I backed up all my photos and docs on various DVD's and CD's once I realised but I cant see that I backed up my Itunes library. I am only hoping that on the 'Desktop' external hard drive back ups that I can find it again? If it is on there, how do I get it off as I have heard that you can not retrieve certain items from an external hard drive especially with Time machine although I have never needed to before. Do you think all my songs etc have gone forever now??....Help!!
Im not even sure what version of I Tunes it was. I am running Mac OS X 10.5.8 on a 2008 Macbook

If you didn't knowingly change libraries then it is more likely that your original library file become corrupted and was replaced with an blank copy. It should be possible to restore your previous data as follows.
Empty/corrupt library after upgrade/crash
Hopefully it's not been too long since you last upgraded iTunes, in fact if you get an empty/incomplete library immediately after upgrading then with the following steps you shouldn't lose a thing or need to do any further housekeeping. In the Previous iTunes Libraries folder should be a number of dated iTunes Library files. Take the most recent of these and copy it into the iTunes folder. Rename iTunes Library as iTunes Library (Corrupt) and then rename the restored file as iTunes Library. Start iTunes. Should all be good, bar any recent additions to or deletions from your library.
The images are from a Windows system but the principle is just the same... Depending on when you initially installed iTunes the library files may, or may not, end with a .itl extension. Be consistent with the file that you are replacing.
See MusicFolder Files Not Added and Super Remove Dead Tracks for tools to catch up with any changes since the backup file was created.
tt2

I deleted my itunes library (after backing up) now i want to restore from TM to my MBA but its saying there is not enough room even though the library is 22GB and there is 27GB free on my MBA??

Hi everyone,
I deleted my itunes library (after backing up to my time machine) to download a large torrent, now i want to restore my itunes library to my MBA from time machine but its saying there is not enough room on my MBA even though the library is 22GB and there is 27GB free on my MBA??

Here's something else to consider:
Since Snow Leopard, OS X uses a Decimal count for file size. iTunes however still uses a Binary count. What that means is: your iTunes library shows one size, while the folder shows another. Depending on the size of your library, this can be a pretty big difference.
Yours won't be that much, but it may be enough to prevent it from moving to the MBA from the TM.

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Really need help~
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Sync is only oneway, from PC to your device. Unless you have the music on your PC, iTunes is going to wipe out what you have on your device if you are syncing to a new library.
You can only transfer Purchased music over to Itunes on your PC.
iTunes Store: Transferring purchases from your iOS device or iPod to a computer
http://support.apple.com/kb/HT1848
As for you own music, you may have to use a third party software. A good Free one is called Sharepod which you can download from Download.com here:
http://download.cnet.com/SharePod/3000-2141_4-10794489.html?tag=mncol;2

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None of my iDevices can read my iTunes library after about 30 minutes. My iDevices lose connection to my library and I have to do one of the three following things in iTunes to regain connectivity: 1. Restart iTunes 2: Stop / Start Home Services 3: Start playing a song.
I'ts as if iTunes goes into a background or sleep mode. During the loss of connectivity my iDevices show that there's a library shared, but I cannot connect to it.

Smae issue here, but I'm unable to get Home Sharing started again (after MAc and iOS restarts, Home Sharing on/off. etc.) This happend a few weeks ago and turngin Home Sharing Off/On fixed the connection issue b/w iPad2 5.1 and iTunes 10.6.1 running on a OSX10.6.8.
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How do I restore my itunes library after replacing a faulty hard drive?

How do I restore my itunes library after replacing a faulty hard drive?

did you make a backup of your library before replacing the HD ?
if so, how and what did you back up ?
if not, you can redownload previous purchases ☞ Downloading past purchases from the App Store, iBookstore, and iTunes Store.
if you have your media files on an iPod, check out this post by Zevoneer.

Need some help: my itunes won't sync with my iphone anymore. Both softwares are up to date and I've reinstalled itunes. After I reinstall, it syncs. But then when I reboot my computer, it no longer syncs anymore and I have to keep reinstalling itunes. Tho

Need some help: my itunes won't sync with my iphone anymore. Both softwares are up to date and I've reinstalled itunes. After I reinstall, it syncs. But then when I reboot my computer, it no longer syncs anymore and I have to keep reinstalling itunes. Thoughts???

thought that it was possible to have the same iTunes library on any machine that was authorised, a kind of cloud-iTunes I guess.
That would convenient, but sadly it is not the case. Sorry!
Either way your welcome and best of luck!
B-rock

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tt2

How do i sync apps to my iPhone 4S using itunes without losing aps already installed on the phone but with a different apple ID, and i dont have the apple ID??

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How have you managed to get apps on your phone that are tied to a different and unknown AppleID?
If these apps were not purchased by you, having them is effectively software piracy and you should purchase them using your own AppleID if you want to keep hem.

Sync apps back to iTunes library after iTunes reinstall

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