The File Extensions Database

.ASAX File Extension

  • Developer by: Microsoft
  • Category: Web Files
  • Format: Text

What is an .ASAX file?

.ASAX is ASP.NET Server Application File

File used by ASP.NET Web applications; contains program code that is used to respond to application-level events raised by ASP.NET or HttpModules; parsed and compiled at application runtime; used for handling events during application initialization and shutdown, as well as processing global exceptions and errors.

ASAX files are stored in the root directory of the ASP.NET application and have the name Global.asax. By default, any direct URL requests to ASAX files are rejected. Additionally, external users cannot view or download their source code.

NOTE: The Global.asax is optional in ASP.NET Web applications.

Programs that open ASP.NET Server Application File
Microsoft Visual Studio 2017
Microsoft Visual Web Developer

How to solve problems with ASAX files

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