What's a service pack?
A service pack is a Windows update that combines new security and performance updates with previously released updates. Installing a service pack helps make sure you've got all the updates your PC needs to help make it more reliable, run more smoothly, and even more enjoyable to use. Think of it as a free all-in-one tune up for your PC.
There are two service packs for Windows Vista. Service Pack 1 (SP1) was released in April 2008, and might already be installed on your PC (to find out, click on the Start button and enter "winver" in the search box). Service Pack 2 (SP2), available in May 2009, contains all the updates we've released since SP1 plus support for new types of hardware and emerging hardware standards. You should install both Service Packs, and you need to install SP1 before SP2.
Updating your Windows Vista–based PC
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The easiest way to keep your Windows Vista-based PC up-to-date is to turn on Automatic Updates. It's really smart to have Automatic Updates turned on because it'll help ensure you get important updates right away. Plus, you'll get service packs when they're available for your PC.
 How to turn on automatic updates
Go ahead and turn on Automatic Updates. If you don't have SP1 already, it'll download soon. After that, it could be a month or more before SP2 downloads. Just keep an eye on the lower right corner of your screen. When the update has downloaded, you'll see the update alert. Click on the alert to start the installation, which will take approximately one hour. |
Upgrading from Windows XP
Free help with service packs
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If you have problems installing a service pack, Microsoft is here to help, free of charge. Microsoft provides free support covering any issue you have with installing service packs. For more information please visit the Windows Vista Service Pack support site.
Windows Vista Service Pack installation support |