If you are one of the unlucky owners of one of the first 2-in-1 PCs, announced in 2012 and sold throughout 2013 and 2014, your PC was eligible for the free Windows 10 upgrade in mid-2015, and it also received the Summer 2016 Anniversary Update (version 1607) without any compatibility issues.
But when Windows Update tries to install the March 2017 Creators Update, version 1703, the installation fails with a dire (and confusing) message that reads:
Windows 10 is no longer supported on this PC
Uninstall this app now because it isnt compatible with Windows 10.
Dont be fooled by that message. Theres no app to uninstall. This problem occurs because of a fundamental incompatibility between the PC hardware and the latest release of Windows 10.