While direct links are largely discontinued, you can still find official Windows 8.1 images through these Microsoft-managed channels:
: Previously hosted the Media Creation Tool for downloading Pro and Home editions. Windows 8.1 Pro ISO September 2019 Free Download
A "Windows 8.1 Pro September 2019" ISO typically refers to a or a standard ISO that has been updated with patches released through September 2019. While direct links are largely discontinued, you can
Official support for Windows 8.1 ended on , and Microsoft no longer provides direct ISO downloads for this version on its main software pages. Official Download Methods While direct links are largely discontinued