Support for Windows Vista without any service packs ends today, April 13, 2010.
If your computer is running Windows Vista without Service Pack 2, you won’t get security updates for Windows. This means that your computer will be at risk for viruses, spyware, rogue security software, and other malicious software.
If you want the most updated version of Windows Vista, get Windows Vista Service Pack 2 (SP2).
For more information, see: