Crucially, ARM64 support for Windows didn't mature until the later builds of Windows 10. Consequently, there is no official ISO available from Microsoft for this specific configuration. Any existing "Windows 8.1 ARM64" project typically involves complex "backporting" or the use of leaked engineering builds that were never intended for public use. The Installation Challenge
Windows 8.1 will initiate its first-boot sequence and prepare devices.
: Even if you successfully installed Windows RT, you cannot run standard Windows (.exe) desktop software. It is restricted to apps from the Microsoft Store and a few pre-installed Microsoft apps like Office.
: Traditional 32-bit (x86) and 64-bit (x64) desktop programs will not run natively. You are restricted to ARM64 compiled binaries and universal apps.
Crucially, ARM64 support for Windows didn't mature until the later builds of Windows 10. Consequently, there is no official ISO available from Microsoft for this specific configuration. Any existing "Windows 8.1 ARM64" project typically involves complex "backporting" or the use of leaked engineering builds that were never intended for public use. The Installation Challenge
Windows 8.1 will initiate its first-boot sequence and prepare devices.
: Even if you successfully installed Windows RT, you cannot run standard Windows (.exe) desktop software. It is restricted to apps from the Microsoft Store and a few pre-installed Microsoft apps like Office.
: Traditional 32-bit (x86) and 64-bit (x64) desktop programs will not run natively. You are restricted to ARM64 compiled binaries and universal apps.