Download and install the latest version of iTunes.
Install the latest VBScript engine from Microsoft for your Windows OS platform
|Windows 2000||Download and install the latest version of VBScript Windows 2000 from Microsoft, and then try installing iTunes or QuickTime again.|
|Windows XP||Download and install the latest version of VBScript for Windows XP from Microsoft, and then try installing iTunes or QuickTime again.|
|Windows Vista or Windows 7||No download necessary. The latest VBScripting engine is already included with Windows Vista and Windows 7. Follow the steps below to register the VBSScript again if you still have this issue in Vista or Windows 7.|
Register the VBScript engine again
If the latest VBScript engine is already installed, register it again. Note that you must be logged in as administrator or logged in as a user with administrator privileges for the computer to execute these steps.
For Windows 2000 or Windows XP:
1. On the Start menu, click Run.
2. In the "Open" field dialog box, enter the following command and click OK:
3. A message should appear stating that the "DllRegisterServer in vbscript.dll succeeded."
4. Click OK and try installing iTunes or QuickTime again.
For Windows Vista or Windows 7:
1. In the Start menu, type cmd in the Start Search field.
2. Right-click on cmd in the list of search results and click Run as administrator in the pop-up menu. If Windows needs your permission to continue, click Continue. (If you are not logged in as an administrator, you will need to authenticate with an administrator login and password.)
3. In the Command Prompt window, enter the following command:
4. Press Enter on the keyboard. A message should appear stating: "DllRegisterServer in vbscript.dll succeeded."
Note: If you see a message with "error code 0x80004005", the command window was not opened as an administrator.
5. Click OK and try installing iTunes or QuickTime again.