: You will need a valid Product Key to activate Windows 8.1 after installation.
: Select the 64-bit Download button. The link is typically valid for 24 hours from the time of creation. Download WIN8 1X64 4in1 ENU iso
: Choose "English" (or your preferred ENU version) and click Confirm . : You will need a valid Product Key to activate Windows 8
Select , then choose the release, edition, and your desired ENU (English) language. Select x64 as the architecture and click Download . then choose the release
: Once downloaded, you can use tools like Rufus to "burn" the ISO onto a USB drive for installation. Windows 8.1 English ISO File - Microsoft Q&A