File Extension Search

.efw File Extension

Developer: Computer Associates
File type: Renamed Zip or Executable File
You're here because you have a file that has a file extension ending in .efw. Files with the file extension .efw can only be launched by certain applications. It's possible that .efw files are data files rather than documents or media, which means they're not meant to be viewed at all.

what is a .efw file?

A renamed ZIP or executable file that has the .efw extension is classified as an archive file converted to the EFW format, and these EFW files are most of the time transmitted as email attachments checked by an antivirus software from Computer Associates. These EFW files are encrypted with compression and encoding specifications used and implemented by the Computer Associates Security Center application. These EFW files may also be executable files of certain applications converted to the EFW format for transmitting these executable files as email attachments. A user may revert these EFW files back to its original format by changing the EFW extension to ZIP. If an EFW file is an executable file of a legitimate Microsoft Windows application, then users can change the .efw extension to .exe and run the executable file in their Microsoft Windows-based systems. Users of antivirus products developed by Computer Associates may opt to disable their antivirus software to avoid legitimate ZIP or executable files from being exported to the EFW format, in case these ZIP and executable file attachments are from trusted sources. An EFW file converted to the ZIP format can then be opened using widely used ZIP decompression and compression software like WinZIP.

how to open a .efw file?

Launch a .efw file, or any other file on your PC, by double-clicking it. If your file associations are set up correctly, the application that's meant to open your .efw file will open it. It's possible you may need to download or purchase the correct application. It's also possible that you have the correct application on your PC, but .efw files aren't yet associated with it. In this case, when you try to open a .efw file, you can tell Windows which application is the correct one for that file. From then on, opening a  .efw file will open the correct application. Click here to fix .efw file association errors

applications that open a .efw file

Corel WinZip 16 Pro

Corel WinZip 16 Pro

Compressing files frees up space in the hard disk, and Corel Win Zip 16 Pro can compress files into different formats. This software allows users to choose the level of compression and the compression method that they want to integrate into their files and folders. All Major compressed formats can be extracted by this application, and this compression and decompression software runs in Microsoft Windows XP, Vista And window 7. Internet connectivity is needed for activating this program. Corel WinZip 16 Pro can provide users with access to Zipsend, which is use to compress and send large files through email. This software may also provide users with access to Zipshare, which is use to upload compressed files to various social Websites. Backups are necessary for the important data of the user, and Corel WinZip 16 Pro provides an automated process for backing up files. Users can burn backups directly unto a CD/DVD or Blu-ray disc, or send the compressed files to the user’s email address for virtual backups.

a word of warning

Be careful not to rename the extension on .efw files, or any other files. This will not change the file type. Only special conversion software can change a file from one file type to another.

what is a file extension?

A file extension is the set of three or four characters at the end of a filename; in this case, .efw. File extensions tell you what type of file it is, and tell Windows what programs can open it. Windows often associates a default program to each file extension, so that when you double-click the file, the program launches automatically. When that program is no longer on your PC, you can sometimes get an error when you try to open the associated file.
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