Windows XP Service Pack SP1a

First Service Pack for Windows XP :) The official version of Windows XP SP1.

A package of updates for Windows XP. Windows XP SP1 brings enhanced security, reliability and compatibility to business and home users.

Windows XP SP1 includes all of the security patches available via Windows Update. It also contains all updates resulting from the Windows code review conducted earlier this year as part of the Trustworthy Computing initiative.

In addition to the traditional service pack updates, Windows XP SP1 delivers the required changes of the proposed consent decree signed with the U.S. Department of Justice and nine state attorneys general.

The changes allow both computer manufacturers and users to remove end-user access to Microsoft Internet Explorer browser software, Windows Media Player, Windows Messenger, Outlook Express and Microsoft's Java virtual machine. This is just one of many components of the compliance effort undertaken by Microsoft since the consent decree was signed in November 2001.

Changes in Current Version:

- Windows XP SP1a does not include or install the Microsoft VM, which provides support for running Java programs
- The title for the Windows XP Service Pack 1 entry in the Add or Remove Programs tool in Control Panel is changed to "Windows XP Service Pack 1a."