Autoruns 64a:
| Your system | Recommended build | Why |
|-------------|------------------|------|
| Intel/AMD (x64) | autoruns64.exe | Native, no emulation layer needed |
| ARM64 (Snapdragon, etc.) | autoruns64a.exe | Faster, lower RAM, avoids Prism translation |
| You share a USB toolkit | Both | Keep autoruns64.exe (works everywhere except pure ARM64 without emulation – rare) | autoruns 64 vs autoruns 64a
Microsoft has aggressively pushed Windows on ARM. Devices like the Surface Pro X, Lenovo ThinkPad X13s, and the new Surface Laptop Studio 2 (ARM variant) run Windows 11 ARM64. These devices can run x86 and x64 applications through emulation (Prism), but native ARM64 applications run faster, use less battery, and have full access to the underlying hardware without emulation overhead. Autoruns 64a :
autoruns64.exe is compiled for the AMD64 instruction set (standard Intel/AMD 64-bit CPUs). Run this on an ARM64 Windows device, and it will work—albeit under emulation (which can be slow, memory-intensive, and potentially miss some low-level ARM-specific startup artifacts). | Your system | Recommended build | Why
autoruns64a.exe is compiled natively for ARM64 architecture. It runs without emulation, is faster, and is more reliable for deep system introspection on ARM-based Windows PCs.