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Activation fails Error code: 0xC004C003
I had upgraded from W8.1 and Windows 10 was activated. I was under the impression that I didn't need a product key and that my PC would be recognized after doing a clean install. Now I have W10 installed fresh, but get the error code: Error code: 0xC004C003
Last edited by Brink; 19 Aug 2015 at 12:56. Reason: moved to new thread