: Windows 8.1 has not received security patches since early 2023. Using it online poses a significant risk for malware and exploits.
Downloading the 64-bit version via the MCT provides an operating system that contains known, unpatched security vulnerabilities. Connecting a Windows 8.1 machine to the internet poses a significant security risk. windows 8.1 download 64 bit media creation tool
Since the Media Creation Tool is unavailable, you will need a utility to "burn" the downloaded ISO to a USB flash drive (minimum 8GB required). : Windows 8