I accidentally uninstalled QuickTime, and now iTunes won't open.What do i do?

I was uninstalling some programs on my laptop since it has too much. I uninstalled QuickTime, not knowing it was needed to open iTunes. So, now, I downloaded QuickTime so that i can reinstall it. However, it said that it's "not a valid Win32 application." Before that, I tried to open my iTunes, but it said that it needed to be uninstalled and reinstalled. So, i did just that. I saw an old itunes setup in one of my folders. However, it was an old version, so it won't open. So now, as i'm typing this, i'm downloading the latest itunes in hopes of getting it right. What should i do? Can anyone help me?

You can install it again from mac OS dvd, there's a folder named "optional installs" or "additional installs"with a installer in there, simply pen that installer and select from the list QuickTime and that's all

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I downloaded yosemite and now itunes won't open. what should i do?

i donwloaded yosemite os x yesterday; and now itunes won't open at all. what to do? (i also downloaded, and re-downloaded, the latest itunes.)

huh. created a new account, and then itunes opened, without my music. then went back to my old account and now it seems to be working. wth?

Installed v8 and now itunes won't open

I upgraded to V 8 and now itunes won't open. Saying my audio configuration not right. Anyone know how to fix this?

I always backup and archive any and all versions I've used and downloaded, or at least until I feel safe with the current version.
Setting a backup also lets a system be restored to prior point in time.
http://www.apple.com/support/itunes/
Audio playback performance issues -
http://docs.info.apple.com/article.html?artnum=93610
http://support.apple.com/kb/TS1386
Troubleshooting iTunes
http://docs.info.apple.com/article.html?artnum=302856

I ran a System Restore on my Windows XP notebook and now iTunes won't open. It says something about my "iTunes library being created in a new version of iTunes".

I ran a System Restore in my Windows XP notebook and now iTunes will not open. The message: The file "iTunes Library.itl" cannot be read because it was created by a newer version of iTunes. What can I do about this?

Depending on the iTunes settings and where the music is downloaded from, by default, it is stored in C:\...\My Music\iTunes\iTunes Music\. So, if you need to backup, that would be the folder you want to grab.
However, uninstalling/reinstalling iTunes doesn't affect that folder, so if you have to remove and reinstall it you should not lose any music (although backups are always a good idea).
In reinstalling, I'd recommend opening your Control Panel and going into Add or Remove Programs, and removing the following:
1. Apple Mobile Device Support
2. Apple Software Update
3. Bonjour
4. iPod for Windows (if it exists)
5. iTunes
6. QuickTime
Then, restart the computer, and download/install iTunes from http://www.apple.com/itunes/download/. This should ensure that the appropriate version of all related software is installed, and everything is in sync.
CG

Ask your question.stalled 10.5 and update on my G4 PB and now Itunes won't open due to library created by nwer version, How do I get the old version back ? thankfully I don't have anything in it, having deleted everything for room for the new install.

I just installed 10.5 and .8 update, from 10.4xx, Original 10.5 Archived and installed, Now itunes won't, can't open due to "library created by a newer version error message,
How do I fix this ? uninstall ??? reinstall ?
I originally didn't have enough free space to intall the new OS so deleted everything/songs and some podcasts in itunes, backed up on another ipod.that hasn'r been updated so not missing anything, but now can't access\ another new(old) ipod and iphone (and not anytthing now) that wouldn't work on the old OS. due to not having the required itunes upgrade and not upgradeable on 10.4xx
Thanks in advance.

After reinstalling itunes like PowerBloodRespect said, go into itunes on your account and connect your ipod. On the ipod summary tab, uncheck the box to launch itunes when the ipod is connected.
You also might want to go into itunes preferences on both accounts.
On the Device tab, put a checkmark in the box to prevent ipods from syncing automatically.

Did the requested upgrade and now iTunes won't open for anything

I upgraded to the newest version and now iTunes wont open, no error message, nothing. It looks as if it's going to launch when I click on it but nothing happens. This Happened last time I upgraded but it worked itself out after a few mins but this has been all day... nothing is working.
I tried to plug my iPod in and not even that will launch iTunes.
In a similar topic it was asked if QuickTime would launch, my QuickTime will open but it has been loading for 2hrs now.... WHATS GOING ON?!!???
Dell dimension desktop Windows XP

Me too... The other post relating to this was with a PC but the same is happening for macs too by the look of it. Has anyone got an idea of how to sort this out? I don't suppose it's possible to find an earlier version of iTunes to download? I'm going to have a search now cos I need iTunes to be working!

I just tried to update Itunes. Something went wrong with the update and now itunes won't open

I was notified of an update to itunes when I opened it on my PC this morning. I agreed to the update. The update did not finish and now I can't open itunes on the PC. I tried "repair" in the control panel to no avail. HELP!!

For general advice see Troubleshooting issues with iTunes for Windows updates.
The steps in the second box are a guide to removing everything related to iTunes and then rebuilding it which is often a good starting point unless the symptoms indicate a more specific approach. Review the other boxes and the list of support documents further down the page in case one of them applies.
The further information area has direct links to the current and recent builds in case you have problems downloading, need to revert to an older version, or want to try the iTunes for Windows (64-bit - for older video cards) release as a workaround for installation or performance issues, or compatibility with QuickTime or third party software.
Your library should be unaffected by these steps but there are also links to backup and recovery advice should it be needed.
tt2

I downloaded Mavericks, and now ITunes won't open

Although the iTunes icon is showing on the dock and in Launchpad and Finder, it won't open.

To confirm, you've downloaded and installed Mavericks, and not just downloaded Mavericks, right?
If you have installed Mavericks, have you tried updating to load the current iTunes 12 software, to see if that might resolve this?
I'd probably also try using Disk Utility.app (Applications > Utilities) to repair the disk permissions, and also to check the volume for errors, though it's not at all clear that would help here.
If all that fails, see if Console.app (Applications > Utilities) shows any messages relevant to iTunes, if you launch that and then try the (failing) iTunes launch.

Upgrading to 7.0.1 and now Itunes won't open...

I get an error message that says "QuickTime Version 7.0d0 is installed, Itunes requires QuickTime version 7.1.3 or later. Please reinstall Itunes." What is going on and how do I fix?

"QuickTime Version 7.0d0 is installed, Itunes requires QuickTime version 7.1.3 or later. Please reinstall Itunes."
with that one. let's try this first.
head into your Add/Remove programs. uninstall QuickTime.
Next, we’ll manually remove leftover program files and folders.
1. On the Start menu, click My Computer (or double-click My Computer on the Desktop).
2. In My Computer, open Local Disk.
3. Open Program Files.
4. Right-click on the QuickTime folder and click Delete from the shortcut menu.
5. Navigate to C:\Windows\system32\.
6. Remove the files QuickTime.qts and QuicktimeVR.qtx.
7. Restart your computer.
next, we'll get a fresh copy of QuickTime into your PC by doing a repair install of itunes.
go into Add/Remove and select itunes. click "Change" and then click "Repair".
if the repair install goes through okay, restart the PC and try launching itunes again. does it launch properly now?

I did an update today to my itunes WITHOUT my ipod and now itunes won't open. The error message says it is corrupted.

I did an APPLE update today and now my itunes will not open. It give an error message of corrupted. What can I do to open it?? The message was still he same when I plugged in my ipod. This happens with almost every update. Thanks.

See Troubleshooting issues with iTunes for Windows updates. Use the steps in the second box to repair your iTunes installation. Your library should be unaffected by these steps but there is backup advice elsewhere in the user tip.
tt2

Just downloaded the new iTunes and now iTunes won't open at all. MacBook Pro user

Downloaded the new iTunes a few hours ago, and now after a few restarts, I get no response at all when clicking on itunes.

Launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Console in the icon grid.
The title of the Console window should be All Messages. If it isn't, select
SYSTEM LOG QUERIES ▹ All Messages
from the log list on the left. If you don't see that list, select
View ▹ Show Log List
from the menu bar at the top of the screen.
Click the Clear Display icon in the toolbar. Then try the action that you're having trouble with again. Select any messages that appear in the Console window. Copy them to the Clipboard by pressing the key combination command-C. Paste into a reply to this message by pressing command-V.
☞ The log contains a vast amount of information, almost all of which is irrelevant to solving any particular problem. When posting a log extract, be selective. A few dozen lines are almost always more than enough.
Please don't indiscriminately dump thousands of lines from the log into this discussion.
Please don't post screenshots of log messages—post the text.
☞ Some private information, such as your name, may appear in the log. Anonymize before posting.

I tried to download the automatic iTunes update to my macbook and now iTunes won't open at all with the icon......anybody?, i tried to download the automatic iTunes update to my macbook and now iTunes won't open at all with the icon......anybody?

i tried to download the update to iTunes as prompted by my computer (macbook) now iTunes is completely m.i.a. it certainly won't open with the icon. anybody?

Can you open it from the Applications folder?

OS upgrade and now iTunes won't open.

I work for a computer repair shop. I am not a tech, none of them are in today due to unforseen circumstances. A client called, she had her OS upgraded to Snow Leopard (OS X 10.6?) on her (white) Macbook and now her iTunes wont open at all. She said she tried opening it multilple ways, but when she clicks on it in the the dock it doesn't do anything. She thinks she has the right version. Any ideas?

Reinstall 10.6 again, but this time hold c boot off the 10.6 and erase the ENTIRE internal drive.
You do this by selecting the drive makers name and size on the left hand side, not the slightly indented partition underneath it.
If you erase and install 10.6 only into a parittion, say Macintosh HD, the you still have the hidden Lion Recovery Partition on the drive and it appears you already have 10.7
In the MAS, hold option and click Purchases to redownload Lion
FYI, you don't need to install 10.6 to reinstall 10.7, 10.7 can be reinstalled via the Lion Recovery, Command r boot.
See this for more info
https://discussions.apple.com/docs/DOC-3046

Upgraded and now itunes won't open..get the error something about audio

configuration problem. i didn't get this with the previous version

that's typically caused by an issue with your QuickTime. (iTunes uses QuickTime for audio and video playback.)
the following troubleshooting article may be of some assistance:
iTunes 7 for Windows: iTunes had detected an audio configuration problem

I downloaded 7.0 and now itunes won't open at all...please help.

i have an i pod shuffle which required me to download the latest version i tunes 7.0. now i can't even open itunes. i have rebooted and nothing. please help

Are you getting any error messages?

I accidentally uninstalled QuickTime, and now iTunes won't open.What do i do?

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