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As of 2026, is no longer sold directly by Microsoft or its authorized resellers . Official support for the operating system ended on January 10, 2023 , meaning it no longer receives security updates, feature improvements, or technical assistance.

When purchasing from third-party sites, you are often buying or MSDN (Developer) keys. Using Windows 8.1 in 2025 buy windows 8.1 professional

Since official retail channels are closed, you must rely on third-party marketplaces. Prices for these keys often fluctuate between , though they come with distinct risks regarding legitimacy and activation longevity. As of 2026, is no longer sold directly

: Outlets like HypestKey claim to sell genuine retail licenses with instant delivery and lifetime warranties. As of 2026

: Sites like AllKeyShop and Electronic First aggregate offers from various vendors.