If you aren't sure what processor you have, just try running first. If it isn't compatible, Windows will typically give you an error stating it is "not a valid Win32 application". You should also always Run as Administrator to ensure the tool can scan deep system registry keys and services that require high-level permissions.
We tested both versions on three systems: autoruns 64 vs autoruns 64a
Download the full Autoruns Suite from Microsoft, then just launch the correct file for your hardware. All versions have identical features. If you aren't sure what processor you have,
The primary difference between Autoruns64.exe Autoruns64a.exe is that the "a" version is the command-line (ASCII/CUI) version We tested both versions on three systems: Download
The primary difference between and autoruns64a is the processor architecture they are designed to run on:
| Build | x64 PCs | ARM64 PCs | Forensic value | Speed | |-------|---------|-----------|----------------|-------| | autoruns64 | ★★★★★ | ★★★☆☆ (emulated) | ★★★★★ | ★★★★★ (x64) / ★★★☆☆ (ARM64) | | autoruns64a | ❌ Doesn’t run | ★★★★★ | ★★★★★ | ★★★★★ (native ARM64) |
Aside from their underlying architecture, the two files offer identical features for managing startup locations: autoruns64.exe autoruns64a.exe Full Graphical User Interface (GUI) Full Graphical User Interface (GUI) 64-bit Windows (x64) 64-bit Windows (ARM64) Scans registry, services, and tasks Scans registry, services, and tasks Supports VirusTotal hash checks Supports VirusTotal hash checks Which One Should You Use?