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

Details of extension .efw

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

Below, you can find answers to the following questions:

  • What is the .efw file?
  • Which program can create the .efw file?
  • Where can you find a description of the .efw format?
  • What can convert .efw files to a different format?
  • Which MIME-type is associated with the .efw extension?
CA Security Renamed File .efw file icon

CA Security Renamed File

EFW file is a CA Security Renamed File. If your computer has CA Security Center installed, it will automatically rename downloaded (executable or compressed) files to an EFW extension. You can fix the file extension by renaming the file with the correct extension.
Detailed description not available
Category: Other files
Application: CA Security Center
Program name: -
Mime-type: application/octet-stream
Magic bytes (HEX): -
Magic string (ASCII): -
Related extensions:

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

Is it possible that the filename extension is misspelled?

We found the following similar extensions in our database:

SmartWare Cross-Tab Definition File
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EasyCAD for Windows Drawing
SolidWorks eDrawings Document
Diploma Exam File
Ensoniq ASR File
EARS Filter Definition
Ensoniq EPS Instrument File
Ensoniq SQ1 Instrument Data

The .efw filename extension is often given incorrectly!

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

efe (1), efa (1), edw (1), ebw (1), wfw (1), rfw (1), ffw (1), etw (1), efq (1), efd (1), ef (1), ecw (1), dfw (1), sfw (1), fw (1)

Can't open a .efw file?

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

Windows can't open this file:

File: example.efw

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