The distinction between autoruns64 and autoruns64a is not about features or performance, but about . The former is a relic for a dead platform (Itanium), while the latter is the workhorse for the x64 world we live in today. This seemingly redundant pair serves as a quiet reminder of the turbulent transition to 64-bit computing. For the system administrator or power user, the lesson is simple: ignore the "64" and look for the "a" —it is the tool that will keep your modern Windows system secure and booting cleanly.
Autoruns is the ultimate startup and persistence viewer, far surpassing MSConfig or Task Manager. With the rise of (e.g., Snapdragon X Elite), Microsoft now provides two native 64‑bit builds. At a glance they look identical, but under the hood, architecture matters. autoruns 64 vs autoruns 64a