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How to activate Windows XP in Regedit

many people still love Windows XP and often install it in a VM. It’s very possible that none of the keys you've tried are working due to the simple fact of over use. There is a solution. Thankfully, you can install and then activate Windows XP without using a key. Here’s how to do it.

  1. Click on the Start button in Windows

  2. Now open the Run dialogue box

  3. Type “Regedit” and hit Enter

  4. Once the registry editor pops up, expand the HKEY_LOCAL_MACHINE entry

  5. Open SOFTWARE > Microsoft > Windows NT > CurrentVersion > WPAEvents located under HKEY_LOCAL_MACHINE

  6. Once you’ve opened the WPAEvents registry entry, you will see the OOBETimer in the right panel

  7. Double-click OOBETimer to change its value

  8. Highlight all values and delete them

  9. Enter the new value: FF D5 71 D6 8B 6A 8D 6F D5 33 93 FD

  10. Click OK

  11. Now right-click on WPAEvents and click on Permissions

  12. Once the Permissions window appears, click on the SYSTEM tab and click “Deny Full Control“

  13. Now click OK, followed by YES on the next screen, and exit the registry editor

  14. Restart Windows

  15. After it restarts, press the Start button and bring up All Programs

  16. Click "Activate Windows"

Windows XP is now activated without using a Windows XP product key.