How to upgrade from Windows XP to Windows Vista when Windows Live OneCare 2.0 installed the computer

This article describes how to upgrade a computer where Windows Live OneCare 2.0 is installed from Windows XP to Windows Vista.

When you install Windows Live OneCare, the version of Windows Live OneCare that is installed depends on the operating system on the computer. For example, the version of Windows Live OneCare that is designed for Windows XP will not work as expected on a Windows Vista-based computer.

To install the correct version of Windows Live OneCare, uninstall the Windows XP version of Windows Live OneCare before you upgrade a computer that is running Windows XP to Windows Vista. After the computer is upgraded to Windows Vista, reinstall Windows Live OneCare. When you reinstall Windows Live OneCare after you upgrade the computer to Window Vista, the Windows Vista version of Windows Live OneCare is automatically installed. Therefore, all the files that are required to run Windows Live OneCare on a Windows Vista-based computer are installed.

To upgrade a computer where Windows Live OneCare is installed from Windows XP to Windows Vista, follow these steps:

1. On the Windows XP-based computer, make an incremental backup in Windows Live OneCare.
2. Uninstall Windows Live OneCare. To do this, follow these steps:
   1. Click Start, click Run, type Appwiz.cpl, and then click OK.
   2. In the list of installed programs, uninstall Windows Live OneCare, and then restart the computer.
3. Upgrade the computer to Windows Vista.
4. Reinstall Windows Live OneCare 2.0.
   
   Note You cannot reuse a product key to reinstall Windows Live OneCare. You can use your Windows Live ID to reinstall Windows Live ID or install Windows Live OneCare on as many computers as your subscription allows for. Your information is transferred when you reinstall Windows Live OneCare.
5. Create a full backup in Windows Live OneCare.

Note After you upgrade the computer to Windows Vista, you must create a full backup before you can create incremental backups.

Note You can continue to restore files from incremental backups that were created in Windows Live OneCare 1.6.

For more information about how to prepare to upgrade a Windows XP-based computer to Windows Vista, click the following article number to view the article in the Microsoft Knowledge Base: For more information about how to use an upgrade version of Windows Vista to upgrade a Windows XP-based computer to Windows Vista, click the following article number to view the article in the Microsoft Knowledge Base: For more information about problems that can occur when you try to install or uninstall Windows Live OneCare, click the following article number to view the article in the Microsoft Knowledge Base: