The File Extensions Database

.AU3 File Extension

  • Developer by: AutoIt
  • Category: Developer Files

What is an .AU3 file?

.AU3 is AutoIt v3 Script

Automated script created with AutoIt v3, a freeware scripting program that uses a programming language similar to BASIC; designed for automating commands within Windows and for other general scripting purposes.

The AU3 file format stores AutoIt3 scripting language. The script can be used to simulate keystrokes, mouse movement, and manipulate windows, which can automate tasks that are not possible with VBScript or SendKeys.

NOTE: You can edit AU3 script files with the SciTE4AutoIt3 program.

Programs that open AutoIt v3 Script
File Viewer Plus

How to solve problems with AU3 files

  • Associate the AU3 file extension with the correct application. On :
    Windows: Right click on any AU3 file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.AU3 files". Mac: Right click (or Ctrl-click) the AU3 file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .AU3 is AutoIt v3 Script. Because only the current version supports the latest AU3 file format. Search, therefore, e.g. on the AutoIt manufacturer website after an available .AU3 is AutoIt v3 Script update.
  • To make sure that your AU3 file is not corrupted or virus-infected, get the file again and scan it with antivirus software.