Install Directory Structure

The AutoIt installer creates a directory structure (usually located in \Program Files\AutoIt3) summarized in the following table. The installer also creates Start Menu shortcuts, but no other files are added or modified.

Files and Directories Description
(Top-level files)
AutoIt3.exe The AutoIt main program and only file required to run scripts!
AutoIt3_x64.exe The x64 version of AutoIt (if installed).
Au3Info.exe The AutoIt Window Info Tool.
Au3Info_x64.exe The x64 version of Au3Info (if installed).
AU3Check.exe The AutoIt syntax checker.
AutoIt.chm This help file.
Uninstall.exe The AutoIt uninstaller.
AutoIt v3 Website.url A shortcut to

Icons\ Contains icons used for the .au3 filetype icon in Explorer.

Aut2Exe.exe The script compiler.

Aut2Exe_x64.exe The x64 version of Aut2Exe (if installed).

UPX.exe The UPX compressor (reduces the size of exe files).

COM\ Contains examples of COMs written in AutoIt.

GUI\ Contains examples of GUIs written in AutoIt.

Helpfile\ Contains scripts used in many of the help file examples.

AutoUpdateIt\ Contains a script for easily retrieving the latest version of AutoIt3.

Editors\ Contains syntax coloring definitions for some popular text editors.

Geshi\ Contains syntax coloring file for the Geshi server-side syntax highlighter.

Prettify\ Contains syntax coloring file the Google Prettify client-side javascript highlighter.

Contains icons used for the .au3 filetype icon in Explorer.

Contains standard include files (pre-written user functions). See User Defined Function Reference.

Contains a DLL version of AutoIt v3 that provides a subset of the features of AutoIt via an ActiveX/COM and DLL interface.

Contains a light version of SciTE which allows syntax coloring.

It should be noted that to run AutoIt scripts, the only required file is AutoIt3.exe. If you compile a script into an executable then a user does not require AutoIt to be installed to run a compiled executable.

Registry Keys

The AutoIt installer creates registry keys under HKEY_LOCAL_MACHINE\Software\AutoIt v3 or HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\AutoIt v3\ if using a 64-bit machine and HKEY_CURRENT_USER\Software\AutoIt v3. The keys are NOT used/created when AutoIt utilities are run on machines that lack a full AutoIt installation--AutoIt is "clean" to run on servers, etc.

The table below shows the default (or typical) registry keys. The keys in italic are not created by the installer itself but by the first execution of the corresponding utility:


(Default) REG_SZ (value not set)

InstallDir REG_SZ C:\Program Files\AutoIt3

Version REG_SZ Version Number
HKEY_CURRENT_USER\Software\AutoIt v3\

(Default) REG_SZ (value not set)

LastCompression REG_DWORD 0x2

LastExeDir REG_SZ My Documents

LastIcon REG_SZ  

LastIconDir REG_SZ C:\Program Files\AutoIt3\Aut2Exe\Icons

LastScriptDir REG_SZ My Documents

(Default) REG_SZ (value not set)

DoneOption REG_SZ Notify

DownloadDir REG_SZ C:\Downloads\ForExample\

Default REG_SZ (value not set)

AlwaysOnTop REG_DWORD 0x1

ColorMode REG_DWORD 0x1

CoordMode REG_DWORD 0x1

HighlightColor REG_DWORD 0x0

HighlightControls REG_DWORD 0x1

Magnify REG_DWORD 0x0

WinH REG_DWORD 0x01c2

WinW REG_DWORD 0x012c

WinX REG_DWORD 0x0064

WinY REG_DWORD 0x0064