Microsoft has released Service Pack 2 (SP2) for Windows Vista and Server 2008. Service Pack 2 for Windows Server 2008 and Windows Vista (SP2) is an update to Windows Vista and Windows Server 2008 that supports new kinds of hardware and emerging hardware standards, and includes all updates delivered since SP1. SP2 simplifies administration by enabling IT administrators to deploy and support a single service pack for clients and servers.
SP2 is an update to Windows Server 2008 and Windows Vista that incorporates improvements discovered through automated feedback, as well as updates that have been delivered since SP1. By providing these fixes integrated into a single service pack for both client and server, Microsoft provides a single high-quality update that minimizes deployment and testing complexity for customers.

Service Pack 1 is a prerequisite for installing Service Pack 2. Please make sure that your system is running Service Pack 1 before you install Service Pack 2.
Also if you have any beta versions of SP2 installed, they must be uninstalled prior to installing. Use the Control Panel applet "Programs and Features" and select "View installed updates" from the top left of the task pane and look for KB94846.
Its a standalone installer and available for both 32-bit and 64-bit versions.
You can download SP2 using following links:
Download SP2 Standalone Installer(32-bit)
Download SP2 Standalone Installer(64-bit)
This article was posted by VG in following section: Windows Vista.
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Ankit Bajaj
Thanks bro for the info !!!
David
Is this the final release or is it a beta?
VG
^^ Final release.
Diver
my vista is a pirated copy will the crack work if i install this?
Diver
my vista is a pirated copy will the crack work if i install this?
JK
Thanks for this very inportant info!
Guo Hui
Just download SP2(32-bit) and after update my vista performance get better.......thanks for info ^^
user
I see no benefit
boot (start) takes 20 sec longer
may be more stable in system
waiting for Windows 7
Someone
What's different?
Robero
Thanks VG for the info but, was offered SP2 through Windows Update around 4pm (EST).The only thing that puzzled me was the size of the download.It said download size 436 MB - 445 MB.This seems quite large IMHO.Does anyone know if this is correct?I assumed being offered through Windows update was to be significantly smaller?VG if you see this please respond. Thanks in advance Mate!