[portable] | Windows+81+download+64+bit+media+creation+tool+link

Your PC will no longer receive security updates, making it more vulnerable to modern threats. If your hardware supports it, Microsoft recommends upgrading to a newer version like Windows 10 . Create installation media for Windows - Microsoft Support

: You should specifically download the 64-bit (x64) version unless you have legacy hardware that only supports 32-bit (x86). How to Download Windows 8.1 (64-bit) in 2026 windows+81+download+64+bit+media+creation+tool+link

: Windows 8.1 typically requires a valid product key during or after installation. If your PC originally came with Windows 8 or 8.1, the key is likely embedded in the motherboard's UEFI BIOS and may activate automatically. End of Support : Microsoft officially ended support for Windows 8.1 on January 10, 2023 Your PC will no longer receive security updates,

The official tool: