Windows XP Pro Reactivation

[Guest]

I just recently reinstalled my Windows XP Pro OS and I used the wrong
Activation Key to activate it. I used the one that was already on my other
computer. I am unable to download any updates and don't wish to reinstall the
OS again if I don't have to. Is there any way I can reactivate my current
Install of the OS???
Thanks in advance!

 

[Guest]

Sry about all of the other posts....it said it failed to go through, so I
sent it again...I guess it went through in the first place..

 

[Phil]

1) Run regedit and go to:
HKey_Local_Machine\Software\Microsoft\WindowsNT\CurrentVersion\WPAEvents
In the right pane double click on "oobetimer" and change at least one
digit of this value

(ie: change hex "CA" to "AC"). This will deactivate windows.
Exit regedit.

2) Choose run from the start menu and type in this command
c:\windows\system32\oobe\msoobe.exe /a

3) Choose activate by phone.

4) Choose Change Product Key.

5) Type in the new product key.
CLICK UPDATE

6) Now reboot.

7) After reboot, re-enter command from step 2 to verify activation.

 

[Guest]

Thank you for the reply on this issue. It helped me fix the problem.
-Robert Terry

 

[Phil]

You're welcome.

Thank you for the reply on this issue. It helped me fix the problem.
-Robert Terry

 

[Alex Nichol]

I just recently reinstalled my Windows XP Pro OS and I used the wrong
Activation Key to activate it. I used the one that was already on my other
computer. I am unable to download any updates and don't wish to reinstall the
OS again if I don't have to. Is there any way I can reactivate my current
Install of the OS???

Run regedit.exe, go to
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT
\CurrentVersion\WPAEvents

and in the right pane double click oobetimer and very carefully *change*
just the first byte. That will make the system appear unactivated.

Now go to Start - All Programs - Accessories - System Tools - Activate
Windows
and set out on 'Activate by Phone'. In that before actually phoning
there is a chance to change Product Key. Do so - to the one it should
be, Accept then cancel before phoning, get on the net and then go back
to activate again on the net