Article ID: 889743 - View products that this article applies to.
This article is Part 9 of the Windows XP Service Pack 2 - Step by Step guide. This article describes how to uninstall Microsoft Windows XP Service Pack 2 (SP2).
To view the other articles in the Windows XP Service Pack 2 - Step by Step guide, see the Microsoft Knowledge Base articles that are listed in the "References" section.
The Windows XP Service Pack 2 - Step by Step guide includes the following topics:
Part 1: Better security with Service Pack 2 Part 2: Installing Service Pack 2 Part 3: The new Security Center Part 4: Automatic Updates Part 5: Virus protection Part 6: Windows Firewall Part 7: Protecting against buffer overflows Part 8: Improvements in Internet Explorer and Outlook Express Part 9: Uninstalling Service Pack 2
Part 9: Uninstalling Service Pack 2A Windows XP-based computer may not operate as expected after you install Windows XP SP2. You may be able to solve problems by using the firewall settings or the Data Execution Prevention (DEP) feature. However, some software programs that are installed on the computer may be incompatible with Windows XP SP2. The software manufacturer may not have released an update.
In this case, you can uninstall Windows XP SP2. To do this, you typically use the Add or Remove Programs item in Control Panel.
How to use Control Panel to uninstall Windows XP SP2
How to uninstall Windows XP SP2 by using the Recovery ConsoleImportant This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/322756/ )How to back up and restore the registry in Windows
If you can no longer start the computer after you install Windows XP SP2, you cannot uninstall Windows XP SP2 by using the usual method. In this case, use the Recovery Console to uninstall Windows XP SP2.
Before you can uninstall Windows XP SP2 by using the Recovery Console, the computer must be configured to start from the installation disk. Make sure that the installation disk is listed first in the basic input/output system (BIOS) boot sequence. There are usually instructions on how to do this in the user manual for the computer.
To uninstall Windows XP SP2 by using the Recovery Console, follow these steps:
For more information about the other topics in the Windows XP Service Pack 2 - Step by Step guide, click the following article numbers to view the articles in the Microsoft Knowledge Base:
889735This article is a translation from German. Any subsequent changes or additions to the original German article may not be reflected in this translation. The information that is contained in this article is based on the German-language versions of this product. The accuracy of this information relative to other language versions of this product is not tested within the framework of this translation. Microsoft makes this information available without warranty of its accuracy or functionality and without warranty of the completeness or accuracy of the translation.
(http://support.microsoft.com/kb/889735/EN-US/ )Windows XP Service Pack 2 (Part 1)
(http://support.microsoft.com/kb/889736/EN-US/ )Installing Service Pack 2 (Part 2)
(http://support.microsoft.com/kb/889737/EN-US/ )The new Security Center (Part 3)
(http://support.microsoft.com/kb/889738/EN-US/ )Automatic Updates (Part 4)
(http://support.microsoft.com/kb/889739/EN-US/ )Virus protection (Part 5)
(http://support.microsoft.com/kb/889742/EN-US/ )Windows Firewall (Part 6)
(http://support.microsoft.com/kb/889741/EN-US/ )Protecting against buffer overflows (Part 7)
(http://support.microsoft.com/kb/889743/EN-US/ )Improvements in Internet Explorer and Outlook Express