Since the Media Creation Tool is retired, follow these steps to get the official image:
In the modern era of computing, where Windows 10 and 11 aggressively push themselves onto every hard drive, searching for the specific string feels less like a routine software update and more like digital archaeology.
Microsoft no longer provides security updates or technical support.
If your PC originally came with Windows 8.1, you can likely upgrade to Windows 10 or 11 for free using the same product key. The Windows 10 Media Creation Tool (still available from Microsoft) will accept a valid Windows 8.1 key during installation.