: Some versions claim to be "pre-activated," which often involves unauthorized bypasses of Windows licensing. Enhanced UI
Pick 1–4.
Your data, privacy, and peace of mind are worth more than a shortcut.
A standard RTM (Release to Manufacturing) ISO of Windows 8.1 from 2013 is missing over 500 security and reliability patches. An Extra Quality build has been "slipstreamed" using tools like NTLite or MSMG Toolkit. This means: