Here’s a clear, step-by-step write-up on obtaining an official Windows 8.1 ISO download. If you need to reinstall Windows 8.1, create a recovery drive, or run it in a virtual machine, getting a legitimate ISO file is essential for security and stability. While Microsoft ended mainstream support for Windows 8.1 on January 10, 2023, the official ISO download tool remains available. Option 1: Microsoft’s Official Tool (Recommended) Microsoft still provides a dedicated Windows 8.1 Installation Media Creation Tool . This tool downloads the correct edition and version directly from Microsoft’s servers.