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Windows 8 upgrade to Windows 8.1 - Error code: 0xC004F012

Asked by Hassan_md on 01/19/2014 at 11:13 PM
I have lenovo G510. Windows 8 was pre-installed in it. I upgraded it to windows 8.1 via windows store.
It worked correctly for 1 day. Then it started asking for activation.
I tried online activation but i got the message saying "Windows cannot activate. Try again later. "



I tried slui.exe 4, but it is not generating any installation id or numbers to call.


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