Windows XP Service Pack 3 (SP3) build 5512 was released to manufacturing on April 21, 2008, and Microsoft planned to make it available to the general public on April 29, 2008 via Windows Update and the Microsoft Download Center. However, due to a compatibility issue with Microsoft Dynamics Retail Management System, the release of Windows XP Service Pack 3 was delayed. A feature set overview has been posted by Microsoft and details new features available separately as standalone updates to Windows XP, as well as features backported from Windows Vista, such as black hole router detection, Network access Protection, and Windows Imaging Component. Microsoft is reporting that over 1,000 fixes have been packed into SP3 along with some performance improvements as well. Internet Explorer 7 is not included as part of SP3.

- Bootable ISO file
- Unattended setup
- Pre-Activated, so you don't need any activation trick.
- CD-KEY (original Volume License Key) is integrated so you don't have to enter anything. SO YOU CAN USE AUTOMATIC UPDATES!

New features :
- Black hole router detection
- Network Access Protection
- Credentials security service provider
- Descriptive security options control panel
- Enhanced security for Administrator and Service policy entries
- Microsoft Kernel Mode Cryptographic Module
- Installing without needing a Product Key during Setup

A full list of new and integrated features is available on the Microsoft website.

With the release of SP3, retail and OEM versions of Windows XP with service pack 3 slipstreamed into them can be installed and run with full functionality for 30 days without a product key, after which time the user will be prompted to enter a valid key and activate the installation. Volume license versions still require entering a product key.

Microsoft noted SP3 can be installed on systems with Internet Explorer version 6 as well as version 7; and similarly Windows Media Player 9 Series or Windows Media Player versions 10 or 11. Although service packs have, until now, been cumulative, installing Windows XP Service Pack 3 requires that the PC must at least be running Windows XP with Service Pack 1 installed. However, it is possible to slipstream SP3 into the Windows XP setup files at any service pack level including the original RTM version without any errors or issues. Slipstreaming into Windows XP Media Center Edition 2005 is not supported. SP3 does contain operating system component updates for Windows XP Media Center Edition and for Windows XP Tablet PC Edition including security updates for .NET Framework versions 1.0 and 1.1 which are included in these Windows XP SKUs. However it does not include update rollups for the Windows Media Center app. in Windows XP Media Center Edition 2005. It also omits Windows Media Player 10 security updates although Windows Media Player 10 is included in Windows XP Media Center Edition 2005.

There are a total of 1,073 fixes in Service Pack 3.

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