: You can often find physical boxed copies or product key cards on sites like eBay or Amazon . When buying here, prioritize listings that include the physical Certificate of Authenticity (COA) or the original retail box to ensure legitimacy.
Since official sales have ceased, your primary source will be third-party sellers who stock "New Old Stock" (unused physical boxes) or OEM licenses: where to buy windows 8.1 pro
: You can still activate the software online or via the Microsoft Product Activation Portal if phone activation is required. 4. Modern Alternatives : You can often find physical boxed copies
: Bulk license platforms like Alibaba frequently list Windows 8.1 Pro keys, though these are often intended for volume licensing or OEM use. : If you only need Windows 8
: You can download the Windows 8.1 Disc Image (ISO) directly from the Microsoft Download Center.
: If you only need Windows 8.1 for a specific old app, run it in a virtual environment (like VirtualBox) on a modern, secure OS to keep your main system safe. Find your Windows product key - Microsoft Support