Descargar Windows 8.1 Iso Guide
I notice you're asking about downloading a Windows 8.1 ISO ("descargar" means "download" in Spanish).
Would you like the direct link to Microsoft's software download page where the Windows 8.1 Media Creation Tool can still be found?
Consider upgrading to Windows 10 or Windows 11 (if your hardware supports it) for ongoing security updates. If you need an older OS for specific software/hardware compatibility, verify your license allows it and download only from Microsoft.
