Filename Extensions
If you are seeking information about file extensions, then you are in the right place at right time.

Details of extension .efw2

1 extension(s) and 0 alias(es) in our database

Below, you can find answers to the following questions:

  • What is the .efw2 file?
  • Which program can create the .efw2 file?
  • Where can you find a description of the .efw2 format?
  • What can convert .efw2 files to a different format?
  • Which MIME-type is associated with the .efw2 extension?
Electronically Filled W-2 Form .efw2 file icon

Electronically Filled W-2 Form

EFW2 file is an Electronically Filled W-2 Form. Form W-2 is an Internal Revenue Service (IRS) tax form used in the United States to report wages paid to employees and the taxes withheld from them.
Category: Document files
Application: AccuWage
Program name: -
Mime-type: application/octet-stream
Magic bytes (HEX): -
Magic string (ASCII): -
Related extensions:
Electronically Filled W-2c Form

Other types of files may also use the .efw2 file extension. If you have helpful information about .efw2 extension, write to us!

Is it possible that the filename extension is misspelled?

We found the following similar extensions in our database:

Internet Download Manager Exported Data
CA Security Renamed File
Framework II File

The .efw2 filename extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

efw (1), fw2 (1), ef2 (1)

Can't open a .efw2 file?

If you want to open a .efw2 file on your computer, you just need to have the appropriate program installed. If the .efw2 association isn't set correctly, you may receive the following error message:

Windows can't open this file:

File: example.efw2

To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program whith which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2003/2008/2012/2016, Windows 7, Windows 8, Windows 10, Linux, FreeBSD, NetBSD, OpenBSD, Mac OS X, iOS, Android