: Microsoft recommends moving to Windows 11 . While there is no official free upgrade from 8.1 to 11, many users have successfully upgraded to Windows 10 first using existing keys, as the upgrade from 10 to 11 is currently free for genuine licenses. Go to product viewer dialog for this item. Microsoft Windows 8.1 Professional
If you still need to purchase it, you must rely on third-party retailers. Where to Buy Windows 8.1 Pro
: You may find physical boxed copies or digital keys on Amazon or eBay from various individual sellers. buy microsoft 8.1 pro
: Stores like SoftwareMedia and FastSoftwares.com still list OEM and single-license versions.
: Sites like Electronic First and HypestKey specialize in older digital license keys. Pricing Information : Microsoft recommends moving to Windows 11
Microsoft officially several years ago . Additionally, official support for the operating system ended on January 10, 2023 , meaning it no longer receives security updates or technical assistance.
: You can still activate Windows 8.1 using a valid 25-digit product key via the PC Settings menu or by phone if online activation fails. Microsoft Windows 8
: Using Windows 8.1 in 2026 is highly discouraged for primary devices because it is vulnerable to new viruses and malware without security patches.