File Extension Library

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.IDL File Extension

  • Developer by: Microsoft
  • Category: Developer Files

What are .IDL files and how to open them?

Can't open .IDL file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .IDL file.

What is a .IDL file extension?

.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
Windows
Microsoft Visual Studio 2017

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.)
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