To install some Windows XP updates or upgrades like Media Player 11, you need to activate your copy of Windows XP. I will show you how you can validate your copy of Windows XP as genuine. Follow these steps:
- Go to “RUN” and type REGEDIT. Windows registry editor will pop up.
- Now expand HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\WPAEvents
- On the right side, double-click on OOBETimer
- In that windows, delete everything you can and exit.
You can achieve this just by applying this registry file. Download it and double-click to apply. - Now, Go to “RUN” and type
%systemroot%\system32\oobe\msoobe.exe /a
- Activate Windows will pop up.
- Choose Yes, I want to telephone a customer service representative to activate Windows and click Next

- Now, press on “Change Product Key”

- Enter new key as
THMPV-77D6F-94376-8HGKG-VRDRQ
- Click on “Update”

- Now, Click on “Remember Later”

- Restart the Windows
- When system reboots, go to “RUN” and type
%systemroot%\system32\oobe\msoobe.exe /a
- You will see on “Activate Windows” that Windows is already activated.

- Press OK to exit.
You are DONE, Njoy!!
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