How to Install Windows XP Service Pack 3 or Service Pack 4 Unofficial

Looking to play around with Windows XP and want to be sure you have the latest Windows Updates? You have two choices, official and unofficial.

You can download the official Service Pack 3 @ https://www.majorgeeks.com/files/details/microsoft_windows_xp_service_pack_3.html.

Here's a video on how to install Microsoft Windows XP Service Pack 3 Final properly:



Optionally you can download Windows XP Service Pack 4 Unofficial which is a third-party add-on that includes Service Pack 3 plus security enhancements not addressed by Microsoft.


It can be applied to a live Windows XP system which has SP1 and includes updates for most Windows XP components, including MCE and Tablet PC. Request-only hotfixes have been included. Currently, Microsoft.NET Frameworks 4.0, 3.5, 1.1 and 1.0 (Tablet PC only) are included in the Windows XP SP4 package. Also, all post-eol updates for. NET Framework 1.1, 3.5 and 4.0 until January 2016 have been included. The .NET 1.x, 3.5 versions are automatically installed/updated in live installations. Only Microsoft.NET Framework 3.5 is enabled by default in an integrated installation. Microsoft .NET Framework 1.1 will always be installed if Media Center Edition is present.

Windows XP SP4 security enhancements: Windows XP SP4 includes registry updates to enhance security provided by Stefan Kanthak, a security expert. These security enhancements address issues not fixed by Microsoft updates.

Here's a better look at installing Windows XP Service Pack 4 Unofficial:

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Here is additional Service Pack 3 links that may be of help at Microsoft:

Information about Windows XP Service Pack 3
https://support.microsoft.com/en-us/kb/936929

Steps to take before you install Windows XP Service Pack 3
https://support.microsoft.com/en-us/kb/950717

Windows XP error messages
https://support.microsoft.com/en-us/kb/949377