The File Extensions Database

.ARN File Extension

  • Developer by: Microsoft
  • Category: Data Files
  • Format: Binary

What is an .ARN file?

.ARN is Autoruns Data File

Native Autoruns binary file format used to display everything that runs automatically when Windows starts; contains all the captured data results; does not include omitted rows.

The ARN file format can be loaded in Autoruns for viewing and comparing with another set of Autoruns results. The ARN file stores data in a binary format whereas the .TXT file stores Autoruns data in text format.

Autoruns is a utility used to show you what programs are configured to run during a system boot up. Some of the programs include Run, RunOnce, and startup folder.

Programs that open Autoruns Data File
Microsoft Autoruns

How to solve problems with ARN files

  • Associate the ARN file extension with the correct application. On :
    Windows: Right click on any ARN file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.ARN files". Mac: Right click (or Ctrl-click) the ARN 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 .ARN is Autoruns Data File. Because only the current version supports the latest ARN file format. Search, therefore, e.g. on the Microsoft manufacturer website after an available .ARN is Autoruns Data File update.
  • To make sure that your ARN file is not corrupted or virus-infected, get the file again and scan it with antivirus software.