In recent weeks readers have sent us the following questions about Windows Live OneCare. This is the third in the series. For more questions, see Windows Live OneCare FAQ Part I and Windows Live OneCare FAQ Part II.
Q: I have both Windows Defender and OneCare and I run Windows Vista. Do I need Windows Defender?
Q: Do I need to open OneCare every time I go online?
A: No. After you download, install, and configure OneCare, it is always on. OneCare works quietly in the background on your computer to protect against viruses, spyware, hackers, and other unwanted intruders.
Q: Can I use OneCare and other antispyware programs?
A: OneCare includes Windows Defender, the Microsoft antispyware solution. Before you install Windows Live OneCare, you should disable or uninstall other security-related programs.
If you use more than one brand of antispyware program at the same time, your computer might suffer from decreased performance, become unstable, or restart unexpectedly. Note: If you already have Windows Defender, you do not need to uninstall it before you install OneCare. For more information, see Does Windows Live OneCare include Windows Defender?
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