Learn more ›During our version of Prime Day, Popular Science readers can get Windows 11 Pro keys for the lowest price we’ve ever offered, just $9.97 until July 20—or until we sell out of codes (reg. Why you should upgrade to Windows 11 ProMicrosoft is ending support for Windows 10 on October 14, 2025, meaning you’ll no longer receive security updates or technical support for your PC. You’ll also get Windows Copilot, an AI-powered assistant powered by a custom version of GPT-4. Upgrade to Windows 11 Pro while it’s only $9.97 during our Deal Days sale. _Microsoft Windows 11 ProSee Deal