File Extension Library

.EFW File Extension

  • Developer by: Computer Associates
  • Category: Compressed Files
  • Format: Zip

What are .EFW files and how to open them?

Can't open .EFW 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 .EFW file.

What is a .EFW file extension?

.EFW file extension is created by Computer Associates. .EFW has been classified as Compressed Files. The format of .EFW file is Zip.

.EFW is Renamed Zip or Executable File

Compressed .ZIP or executable .EXE file renamed by CA Security Centre to have a ".efw" extension; typically applies to e-mail attachments scanned by Computer Associates (CA) antivirus software.

EFW zipped files may be opened by changing the file extension to ".zip" and opening the file with a decompression utility, such as WinZip or Stuffit Expander. Executable files may be run directly by changing the file extension to ".exe" and opening the file.

NOTE: Do not open unknown e-mail attachments from non-trusted sources, as they may contain viruses or other malicious programs.

You can prevent EFW files from being created by temporarily disabling your antivirus software when downloading legitimate zipped or executable files.

List of all softwares that can open the Renamed Zip or Executable File
Corel WinZip 23
E-merge WinAce
Smith Micro StuffIt Deluxe for Windows
Smith Micro StuffIt Deluxe 16

How to fix problems with .EFW files

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