Install AutoIt v3 (This is the latest version as for now)
After installation:
2.1 Click Windows Start icon -> Click "AutoIt v3" -> Click "Browse Extras"
2.2 Extras folder of AutoIt will open in Windows Explorer. Click on "Au3Record" folder -> Double click on "Au3Record.exe"
AU3Record will open
Another way using AutoIt Script Editor(SciTE4AutoIt3.exe):
Download AutoIt Script Editor from https://www.autoitscript.com/site/autoit-script-editor/downloads/
Install it
After installation:
3.1 Open AutoIt Script Editor
3.2. Click Tools menu -> click AU3Recorder from context menu