If you need a for testing, switch to Windows 10 Enterprise Evaluation VHD — still officially provided by Microsoft here: 🔗 Microsoft Evaluation Center – Windows 10 Enterprise VHD
Once you have the official ISO, you have two main paths: (run Windows 8.1 like a dual-boot) or virtual machine VHD (run inside VirtualBox/VMware).
is difficult today because the operating system reached its official end of support on January 10, 2023
Microsoft’s now-defunct modern.ie site provided Windows 8.1 VHDs for cross-browser testing. Those images are no longer updated but still circulate on legitimate MSDN blogs. Check developer.microsoft.com for any remaining legacy images.
: You can find mirrors of the "IE11 on Win8.1" virtual machines originally hosted by Microsoft. Windows 8.1 (VirtualBox VHD/OVA) . Windows 8.1 ISO Archive (includes all editions).
To sum up: from Microsoft for consumers. The correct workflow is:
