This is the critical screen for our keyword:
You are running the tool on a PC that already has a BIOS-locked Windows 8 Core license. Fix: Run the tool on a different PC to create the media. Once the USB is created, it will install regardless of the source PC's license. Media Creation Tool Windows 8.1 Pro 64 Bit
The "Media Creation Tool for Windows 8.1 Pro 64-bit" is more than a piece of software; it is a historical snapshot of a transitional period in computing. It represents Microsoft's attempt to force a unified ecosystem (touch + desktop) onto a 64-bit hardware base that was far ahead of its software’s usability. Today, it serves as a reminder that even the most pragmatic tools—like a USB installer—can become fossils, waiting to be rediscovered by those who remember why, for a brief moment in the 2010s, Windows 8.1 Pro made sense on powerful hardware, even if it never won the hearts of the people using it. This is the critical screen for our keyword:
Microsoft’s support lifecycle policy. Because Windows 8.1 is in "End of Support" (EOL), the company no longer offers the tool via mainstream channels to encourage upgrades. The "Media Creation Tool for Windows 8