Windows 8.1 RTM latest APRIL

Activating the Windows 8.1 RTM:
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 download-- http://www.mediafire.com/download/0vviimbxyhs9i4t
Windows 8.1 Core/Professional:
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1. Install Windows 8.1 Core or Professional
2. When the setup asks for a serial key, use the appropriate generic key (from product.ini):
        Core=334NH-RXG76-64THK-C7CKG-D3VPT
        Professional=XHQ8N-C3MCJ-RQXB6-WCHYG-C9WKB
3. After the installation is complete, go to PC Settings and try to activate with your Windows 8 (Core/Pro) retail key.
4. Online activation should work, if it doesn't, activate via phone
       (Tip: you can call the number via Skype, it's free!)
5. You're copy of the Windows 8.1 RTM is now fully activated and will stay activated forever!

Windows 8.1 Enterprise:
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Windows 8.1 Enterprise RTM can be installed without a serial key, but it can't be fully activated, even if you have a fully activated copy of Windows 8 Enterprise.
The official activation servers aren't available yet, they'll be available at Launch day (17 oct. 2013).
As for cracked activation servers: Windows 8.1 no longer uses KMS V5, it uses V6 which hasn't been cracked yet!