1. Open up Notepad.
2. Copy the following code and paste it in notepad.
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersion]
“CurrentBuild”=”1.511.1 () (Obsolete data – do not use)”
“ProductId”=”55274-640-1011873-23081″
“DigitalProductId”=hex:a4,00,00,00,03,00,00,00,35, 35,32,37,34,2d,36,34,30,2d,
31,30,31,31,38,37,33,2d,32,33,30,38,31,00,2e,00,00 ,00,41,32,32,2d,30,30,30,
30,31,00,00,00,00,00,00,00,86,56,4e,4c,21,1b,2b,6a ,a3,78,8e,8f,98,5c,00,00,
00,00,00,00,dd,da,47,41,cc,6b,06,00,00,00,00,00,00 ,00,00,00,00,00,00,00,00,
00,00,00,00,00,00,00,00,00,00,00,38,31,30,32,36,00 ,00,00,00,00,00,00,b5,16,
00,00,83,83,1f,38,f8,01,00,00,f5,1c,00,00,00,00,00 ,00,00,00,00,00,00,00,00,
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00 ,66,e5,70,f3
“LicenseInfo”=hex:33,b7,21,c1,e5,e7,cd,4b,fd,7c,c6 ,35,51,fd,52,57,17,86,3e,18,
d3,f4,8c,8e,35,32,7b,d1,43,8d,61,38,60,a4,ca,55,c9 ,9a,35,17,46,7a,4f,91,fc,
4a,d9,db,64,5c,c4,e2,0f,34,f3,ea
[HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionWPAEvents]
“OOBETimer”=hex:ff,d5,71,d6,8b,6a,8d,6f,d5,33,93,f d
3. Then save it in .reg extension. For example, save it as License.reg
4. Double click the saved file and click Yes if prompted.
5. DONE! Your Windows XP is genuine now.