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The table below provides some useful information about the .efx extension. It answers questions such as:

  • What is the .efx file?
  • What program do I need to open a .efx file?
  • Where can I find the specifications for .efx?
  • How can I convert .efx file to another format?

We hope you find this page helpful and a valuable resource.

Details of extension .efx

Recommended: Click here to run a free instant scan for .efx related errors

1 extension(s) and 0 alias(es) found in database.

Extension: .efx
Type: eFax Document
Category: Document
Mime type: image/efax
Description:
EFX file is an eFax Document. eFax is a service of j2 Global Communications that allows users to receive and send fax documents in digital format (e.g., in email).
[Detailed description] [Sample not yet available]
Open with: eFax Messenger
Program name: none
Related links:
none
Aliases:
none
Related extensions:
apx, awd, can, fax, fpx, rsb, tif, wfx

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Cannot open .efx files on your system?

Open with...

When windows gives you an error message saying that it cannot open .efx files, this means either:

  1. You need to identify a program that can open the file or
  2. Your registry may be damaged.

RECOMMENDED:
In both cases it is strongly recommended that you run a free scan for registry errors.

Maximize system performance
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