How to reset your Serial Number in Windows XP

By JorgeIvan
in Microsoft (Windows)

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JorgeIvan

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1. Run regedit and go to: HKey_Local_Machine\Software\Microsoft\WindowsNT\Current Version\WPAEvents

on the right double click on "OOBEtimer" and change at least one digit of this value to deactivate windows.

2. Choose run from start menu and type in this command:

%systemroot%\system32\oobe\msoobe.exe /a

to get the activation screen and go to the second option which is activate by phone.

3. In the new screen choose the option to change product key, and type in the new product key (Corporate one only).

4. Close that window, reboot your system and enter the command in step 2 for the second time to verify your activation , you should see "windows is already activated".

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