Trouble installing iTunes or QuickTime for Windows

Windows XP:

1. Choose Start > My Computer (or double-click My Computer on the Desktop).
2. In My Computer or Computer, open the "C:" drive.
3. Open Documents and Settings.
4. Double-click the folder titled with your username.
5. If you see a Local Settings folder, skip to step 12. If you don't see a Local Settings folder, proceed to the next step.
6. Choose Tools > Folder Options.
7. Click the View tab.
8. Select the option to "Show hidden files and folders."
9. Click OK.
10. Double-click Local Settings.
11. Right-click on the Temp folder and choose Delete.
12. In the confirmation dialog that appears click Yes.
13. 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 and repeat step 11.
14. Restart your computer.

Windows Vista and Windows 7:

1. Choose Start > Computer
2. In Computer, open the "C:" drive.
3. Open the Users folder.
4. Double-click the folder titled with your username.
5. If you see an AppData folder, skip to step 10. If you don't see an AppData folder, proceed to the next step.
6. Choose Organize > Folder and Search Options.
7. Click the View tab.
8. Select the option to "Show hidden files and folders." (In Windows 7 this option will be called "Show hidden files, folders, and drives").
9. Click OK.
10. Double-click the AppData folder to open it. If Windows needs your permission to continue click Continue.
11. Double-click the Local folder to open it.
12. Right-click on the Temp folder and choose Delete.
13. In the confirmation dialog that appears click Yes.
14. 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 and repeat step 12.
15. Restart your computer.

For Windows XP, follow instructions in Remove and Reinstall iTunes, QuickTime, and other software components for Windows XP.

For Windows Vista or Windows 7, follow instructions in Remove and Reinstall iTunes, QuickTime, and other software components for Windows Vista.

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.

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. Choose Start > 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.

Once you have completed the above steps to Empty your Temp directory, Completely remove iTunes and QuickTime, and Clean up iTunes installer files on the computer, you can install the latest version of iTunes from http://www.apple.com/itunes/download.

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 XP or Using MSCONFIG to troubleshoot conflicts in Windows Vista and Windows 7 for assistance disabling conflicting processes.

Additionally, some third-party security software cannot be disabled using Selective Startup (MSConfig).  Because of this, it may be necessary to temporarily manually disable such software while troubleshooting installation.  For assistance in configuring or disabling your security software, please contact the manufacturer.

If the iTunes installer (iTunesSetup) is not responding or appears frozen after launching the installer then the folder where the installer is stored may contain unusual characters. If you notice that the iTunes installer or stored in a folder like this, either rename the folder or move the iTunes installer to another location such as the Desktop before launching.