Microsoft always lays out the exact dates when it will end support for a version of Windows in the Windows lifecycle fact sheet, available on Microsoft’s website. Here’s what it says:
- Windows 7 is supported with security updates until the end of extended support on January 14, 2020. You must have Service Pack 1 installed to get updates.
- Windows 8.1 is supported with security updates until the end of extended support on January 10, 2023. You must have updated to Windows 8.1 to get updates—the original version of Windows 8 isn’t supported with updates anymore.
- Windows 10 is supported with security updates until October 14, 2025. You must have the latest update to Windows 10 installed to keep receiving updates until 2025. (That’s the Creators Update, right now.)
Microsoft could extend these dates if they want—and they sometimes do—but these are the dates they’re officially committed to at the moment. Microsoft won’t end support before these dates.
Source: How-To Geek