Microsoft confessed it accidentally upgraded unwilling users to the Windows 10 Fall Creators Update. Due to an update that went bonkers, some users of Windows 10 Creators Update got forcibly updated to the latest version of the operating system. The software giant was trying to notify users of build 1507 and 1511 that these versions are now end-of-life, but it accidentally ended up upgrading users of build 1703:
The update was meant primarily for Windows 10 v1507 and v1511, two Windows 10 versions released in 2015 that are now officially end-of-life.
Microsoft was just trying to notify users that they should update to the latest Windows 10 version to receive security updates.
The update was also displayed for Windows 10 v1607 and v1703, even if those OS versions are still supported, but as an optional update alert.
But it appears that KB4023814 misfired for v1703 users with custom update settings and forcibly installed the latest version, v1709.