EFW file format description
Many people share .efw files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .efw file can be edited, converted or printed with. On this page, we try to provide assistance for handling .efw files.
1 filename extension(s) found in our database.
.efw - 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.
- .efw file format description:
- EFW format
- Other files
- - / -
- CA Security Renamed File related links:
- CA Security Renamed File related extensions:
Naturally, other applications may also use the .efw file extension. Even harmful programs can create .efw files. Be especially cautious with .efw files coming from an unknown source!
Can't open a .efw file?
When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:
Windows can't open this file:
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 one from a list of programs that are installed on your computer.
To avoid this error, you need to set the file association correctly.
- Open Control Panel > Control Panel Home > Default Programs > Set Associations.
- Select a file type in the list and click Change Program.
The .efw file extension is often given incorrectly!
According to the searches on our site, these misspellings were the most common in the past year:
dfw, sfw, fw, ewf, efs, efe, efa, edw, ebw, wfw, rfw, ffw, etw, efq, efd
Is it possible that the filename extension is misspelled?
Similar file extensions in our database:
- Derive for Windows Data
- Seattle FilmWorks Image
- Enter-Tech Recorded Audio
- Ensoniq ASR File
- SmartWare Cross-Tab Definition File
- Windows Firewall Exported Rules
If you find the information on this page useful, please feel free to link to this page.
If you have useful information about the .efw file format, then write to us!