File Extension Library


.3IN File Extension

  • Developer by: Microsoft Corporation
  • Category: Various data Files

What are .3IN files and how to open them?

Can't open .3IN 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 .3IN file.

What is a .3IN file extension?

.3IN file extension is created by Microsoft Corporation. .3IN has been classified as Various data Files.

.3IN is MSN setup information data

The 3in file extension is associated with the MSN Explorer, an internet browser for Microsoft Windows operating system.

The 3in file stores setup information data.

No further information could be found.

.3IN file format is deprecated and this file format is no longer supported.

Currently, .3IN file type is not actively used and is obsolete. This usually happens with system files in older operating systems, files from long-discontinued software, or with previous versions of some file types (documents, projects, images, etc.) that were replaced in later versions of the original programs.


How to open:

Probably not meant to be accessed by the user.

How to convert:

Probably cannot be exported to other formats.

How to fix problems with .3IN files

  1. You need to update the application that you normally use to open .3IN files. Only the latest version of the software supports the current .3IN file format
  2. You need to check the .3IN file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)