Windows 10

This article is about the operating system series developed since 2014. See Windows 10 (original release) for the original operating system release called "Windows 10". Windows 10 is a series of Microsoft Windows operating systems, initially released in July 2015 after being announced in September 2014. It succeeded Windows 8.1 and was ultimately superseded by Windows 11 in October 2021. A new release model called Windows as a service was introduced with smaller and regular feature updates, as opposed to releasing a major version of Windows every few years. Usually, these updates are a new build of the operating system, although in a few cases Microsoft released feature updates consisting of a limited set of new functionality using the regular cumulative update infrastructure.

Originally, feature updates were released twice in a year, with the first feature update being released in spring and the other in autumn. The schedule was realigned in 2021 in that feature updates for Windows 10 would be released annually in order to be consistent with Windows 11's new release cadence.

The series is the last to run on 32-bit x86 systems as well as systems with the legacy BIOS firmware, as Windows 11 (original release) dropped support for these devices.