After repairing Windows XP or after replacing a motherboard, you might receive this error before logging in "This copy of windows must be activated with microsoft before you can log on."
- Download this patch which works for Windows XP Home and Prof.
- Reboot to Safe Mode.
- Open the downloaded file and double-click AntiWPA3.cmd
- Click Yes when it prompt.
- That should be it.
- Restart the computer and you should be able to login now.
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