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Last response: in Windows 8
January 17, 2013 4:55:57 AM

how can window 8 activate

More about : activate

January 17, 2013 5:12:56 AM

with internet connection and a valid key
January 17, 2013 5:16:09 AM

Get the activation code (ms genius key is required)via email or mobile by contacting ms customer care .
also internet connection is required .
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January 17, 2013 1:28:52 PM

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

January 19, 2013 2:29:53 AM

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).