File Extension Library

.IDL File Extension

  • Developer by: Microsoft
  • Category: Developer Files

What is an .IDL file?

.IDL file extension is created by Microsoft. .IDL has been classified as Developer Files.

.IDL is Interface Definition Language File

Source code file created using the Microsoft Interface Definition Language (MIDL); contains interface and type library definitions; used for defining interfaces between client and server applications; also used for generating type libraries (.TLB files) for OLE automation.

List of all softwares that can open the Interface Definition Language File
Microsoft Visual Studio 2017

How to Open .IDL file on different platforms

Open .IDL File on Windows

  • Right-click a .IDL
  • Left-click "Open With" > "Choose another app"
  • Select the program that opens .IDL file and Select check box "Always use this app to open .IDL files" Press "Ok"

Open .IDL File on Mac

  • Right-click (or Ctrl + Left-click) the .IDL file
  • Click "Open With" > "Other.."
  • Then choose another program from the app list and press "Open"
  • Select check box "Turn on" for "Always open in app"

Open .IDL File on Linux

Right click on the .IDL file, choose "Open with" and select a program from the list above

Open .IDL File on iPhone

Select a file. If you don't see an application to open the .IDL file, tap "Share" and choose the right app.
Method 2
Save the file. Then open the app «Files». Touch and hold the file, then release your finger. You will see a black menu bar. After that tap "Share" and select an application.

Open .IDL File on Android

Tap the Settings icon on an Android smartphone, then select «Applications». Click the Settings icon in the upper right corner of the screen, to change the default apps.
If you want to open, edit, save or even convert .IDL files on Android, then your best bet is to download one of the dedicated apps available on Google Play.

How to fix problems with .IDL files

  1. You need to update the application that you normally use to open .IDL files. Only the latest version of the software supports the current .IDL file format
  2. You need to check the .IDL file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)