XP Deactivator removes your XP license information. This way you can change your XP product key. Once Windows is deactivated, click "activate", choose "phone activation" and click on "change product key".

Instructions to change your Windows XP CD-Key:

Open XP Deactivator

Click on "Activate by phone"

Click on "Change product key"

Enter your new product key

Limitations: Requires Microsoft .Net Framework 3.5+ installed.

This program is advertising supported and may offer to install third party programs that are not required for the program to run. These may include a toolbar, changing your homepage, default search engine or other third party programs. Please watch the installation carefully to opt out.