First-generation Windows on ARM PCs will not be able to run Windows 11 24H2
Windows 11 supports a variety of ARM processors from Qualcomm. According to the official documentation, you need a computer with the Snapdragon 850 processor inside or newer to run the current operating system officially. However, customers with PCs powered by the Snapdragon 835, the original Windows on ARM chip from 2016, can bypass hardware requirements and install Windows 11 at their own risk. Sadly, those days will be ending soon.
Starting with Windows 11 version 24H2, Microsoft's operating system requires ARM v8.1 to run. An attempt to boot it from a device with an ARM v8.0-based processor results in system crashes. For reference, the Snapdragon 835 from 2016 is a chip with Kryo 280 cores, which are derivative of ARM's Cortex-A73 cores.
Taras Buria at Neowin
I'm sure all three Windows on ARM users are devastated.