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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. : Sites like AllKeyShop and Electronic First aggregate

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. buy windows 8.1 professional