how can window 8 activate
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More about activate
  1. with internet connection and a valid key
  2. Get the activation code (ms genius key is required)via email or mobile by contacting ms customer care .
    also internet connection is required .
  3. I am assuming your trying to validate the key after an upgrade purchase AND a fresh install from the ISO. I had problems with that. This fixed it:

    1. Run the registry editor (regedit)
    2. Find the following key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Setup\OOBE
    3. Change the value for 'MediaBootInstall' from 1 to 0
    4. Open an elevated command prompt (run as admin)
    5. Run the following command: slmgr -rearm
    6. Reboot
  4. I did a fresh install with an upgrade copy. I activated it by running the installer a second time (in effect, upgrading Windows 8 to Windows 8).
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