Trouble installing or opening iTunes or QuickTime for Windows

Trouble installing or opening iTunes or QuickTime for Windows

If you are having trouble installing or opening iTunes or QuickTime for Windows, follow the troubleshooting suggestions described in this article.

Make sure you have admin access

To install iTunes or QuickTime software, you need to be logged in as an administrator on the computer. If you're not sure if you have administrator access, contact the owner of the computer or your system administrator.

Get the latest Windows updates

The first thing to do when troubleshooting an installation issue on a Windows computer is make sure you have the latest Windows updates installed—to get the latest updates, go to the Microsoft Windows Update page.

iTunes and QuickTime software for Windows require Windows 2000 with Service Pack 4, or Windows XP with Service Pack 2.

Solutions to Common Installation and Launch Errors

• iTunes and QuickTime for Windows XP cannot be installed without Visual Basic Script (VBScript)
  
  
• iTunes for Windows: "Disk is locked" or "iTunes folder cannot be found" when installing or opening iTunes
  
  
• The iTunes application could not be opened. An unknown error occurred (0x666D743F)
  
  
• iTunes 7 for Windows: iTunes had detected an audio configuration problem
  
  
• iTunes 7 or later for Windows Installation stops responding while "registering modules"
  
  
• QuickTime or iTunes Installer "Could not open key" alert stops install on Windows
  
  
• iTunes: Windows reports that iTunesSetup.exe is not a "valid Win32 application"

If your error isn't listed above, or if the steps in the linked articles haven't resolved the issue, try the additional troubleshooting procedures below:

Important: A majority of customers experience successful iTunes installation after completing these troubleshooting procedures. If one does not help, proceed to the next.

Completely Remove iTunes and QuickTime (Click for more)

Note: Songs you purchased from the iTunes Store or imported from CDs are saved in your My Music folder by default and are not deleted by removing iTunes.

1. Quit iTunes.
   
   
   
   
2. On the Start menu, click Control Panel.
   
   
   
   
3. Windows XP and Windows 2000: In Control Panel, open Add or Remove Programs.
   Windows Vista: In Control Panel, click Uninstall a program. Alternately, in Classic View of Control Panel, click Programs and Features.
   
   
   
   
4. Select iTunes from the list of currently installed programs, then click Remove or Uninstall.
   
   
   
   
5. In Windows XP and Windows 2000, when asked if you would like to remove iTunes, select Yes.
   
   
   
   
6. In Windows Vista, if your permission is needed to continue, click Continue.
   
   
   
   
7. After uninstalling iTunes, do not restart if you are prompted to.
   
   
   
   
8. If other entries were present for iTunes remove those as well.
   
   
   
   
9. In Add or Remove Programs or Programs and Features, remove any iPod Updater applications that are listed in the same fashion as iTunes was removed.
   
   
   
   
10. In Add or Remove Programs or Programs and Features, remove any QuickTime installations that are listed in the same fashion as iTunes was removed.
    
    
    
    
11. Restart your computer.
    
    
    
    
12. After the computer restarts, open Local Disk C: in My Computer/Computer or whichever disk programs are installed on.
    
    
    
    
13. Open the Program Files folder.
    
    
    
    
14. Right-click the iTunes folder and select Delete and choose Yes when asked to confirm the deletion. Note: This folder may have already been deleted if iTunes was successfully removed in steps 1-8.
    
    
    
    
15. Right click the iPod folder and select Delete and choose Yes when asked to confirm the deletion.
    
    
    
    
16. Right-click the QuickTime folder and select Delete and choose Yes when asked to confirm the deletion.
    
    
    
    
17. Delete the QuickTime and QuicktimeVR files located in the C:\\Windows\\system32\\folder.
    
    
    
    
18. Right-click on the Recycle Bin and on the shortcut menu, click Empty Recycle Bin.
    
    
    
    
19. Restart your computer.
    
    
    
    
20. Install the latest version of iTunes from http://www.apple.com/itunes/download.
    
    
    
    

Empty your Temp directory and restart (Click for more)

1. On the Start menu, click My Computer/Computer (or double-click My Computer on the Desktop).
   
   
   
   
2. In My Computer/Computer, open Local Disk C:.
   
   
   
   
   
3. Windows XP and Windows 2000: Open Documents and Settings.
   
   
   
   
Windows Vista: Open Users.
4. Double-click the folder that bears your username.
   
   
   
   
5. If you see a Local Settings folder, skip to step 9. If you don't see a Local Settings folder, proceed to the next step.
   
   
   
   
6. Windows XP and Windows 2000: On the Tools menu, click Folder Options.
   
   
   
   
Windows Vista: On the Organize menu, select Folder and Search Options.
7. Select the "Show hidden files and folders" button.
   
   
   
   
8. Click OK.
   
   
   
   
9. Double-click Local Settings. If Windows needs your permission to continue, click Continue.
   
   
   
   
10. Right-click on the Temp folder and on the shortcut menu, click Delete.
    
    
    
    
11. In the confirmation dialog that appears, click Yes.
    
    
    
    
12. If you are unable to delete the Temp folder, close all programs, especially those in the Notification area (system tray) of the Windows Task bar shown below and repeat step 10.
    
    
    
    
13. Restart your computer.
    
    
    
    
14. Install the latest version of iTunes from http://www.apple.com/itunes/download.
    
    
    
    

Clean up iTunes installer files on the computer (Click for more)

You can download the Windows Installer Cleanup Utility from Microsoft, which will clean up any leftover installer files that may be causing issues with your current installation. To do this:

1. Click here first, and read the important information about the software.
   
   
   
   
2. Click the "Download the Windows Installer Cleanup Utility package now" link on that page to download a file titled msicuu2.exe.
   
   
   
   
3. Open the msicuu2.exe file and follow the prompts to install it.
   
   
   
   
4. On the Start menu, point to All Programs and then click Windows Install Cleanup; the Windows Installer Clean Up Utility window appears, listing software that is currently installed on your computer.
   
   
   
   
5. Select iTunes from the list and click Remove.
   
   
   
   
6. Click OK in the confirmation dialog that appears.
   
   
   
   
7. Repeat steps 5 and 6 if you have multiple iTunes entries listed.
   
   
   
   
8. Select QuickTime from the list and click Remove.
   
   
   
   
9. Click OK in the confirmation dialog that appears.
   
   
   
   
10. Repeat steps 8 and 9 if you have multiple QuickTime entries listed.
    
    
    
    
11. Click Exit.
    
    
    
    
12. Restart the computer.
    
    
    
    
13. Install the latest version of iTunes from http://www.apple.com/itunes/download.
    
    
    
    

Download QuickTime Standalone Installer (Click for more)

Try downloading and installing the standalone version of QuickTime from http://www.apple.com/quicktime/download/win.html. Be sure you download the version that does not include iTunes.

Disable other conflicting software (Click for more)

In Windows, some background processes can cause issues for other programs and processes. These conflicts can prevent applications such as iTunes and QuickTime Player from installing. See "Using MSCONFIG to troubleshoot conflicts in Windows" for assistance disabling conflicting processes.

Make sure your folder names don't contain strange characters (Click for more)

http://docs.info.apple.com/article.html?artnum=93976