Windows 8.1 Product Guide
Download Windows 8.1 Product Guide
https://www.microsoft.com/en-us/download/details.aspx?id=40789
Moving from Windows 8 to Windows 8.1 at Microsoft
https://www.microsoft.com/en-us/download/details.aspx?id=40811
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Download Windows 8.1 Product Guide
https://www.microsoft.com/en-us/download/details.aspx?id=40789
Moving from Windows 8 to Windows 8.1 at Microsoft
https://www.microsoft.com/en-us/download/details.aspx?id=40811