If you have an unsupported version of Windows XP or Windows Vista without any service packs, Windows will continue to start and run as usual but you won’t get security updates for Windows.
- Support for Windows Vista without any service packs ended on April 13, 2010. To continue support, make sure you’ve installed Windows Vista SP2.
- Support for Windows XP with Service Pack 2 (SP2) will end on July 13, 2010. To continue support, make sure you’ve installed Windows XP Service Pack 3 (SP3).
Note
There’s no SP3 for the 64-bit version of Windows XP. If you’re running the 64-bit version of Windows XP with SP2, you have the latest service pack and will continue to be eligible for support and receive updates until April 8, 2014.
Microsoft Support Lifecycle Policy FAQ
Which version of the Windows operating system am I running?
What does it mean if my version of Windows is no longer supported?
