error code: 0xC004C003

Key already used on another computer If it's your own try phone activation. And please mask this key.

 

That key has only 20 digits, not 25. Is it planned that way ?

Yeah ... i know that key ... it's the Retail Install Key for Pro, that one won't activate at all .

Use any KMS tool from this forums to activate.

 

Seems there's one segment missing.

 

And it's the generic one .

 

Explains a lot.

 

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Sorry to say but that key only serves one purpose ... to install the system, as the setup requires a key. There is absolutely no way your system was activated using it. What bad hack did you use to achieve activation.

 

lol Dude you should perform an install from scratch and activate using the proven/safe ways or solutions provided here, just check out my signature or s1ave's one.
ps: asap

 

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Make sure you get an .iso from a reliable source, and not TPB. Check out Murphy78 or PaulDesmond on this forum.