Files with $EFS extension can be found as documents encrypted using the encryption file system in Word 2003.

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Software that works with $efs file extension

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$EFS file - Encrypted EFS file

What is $efs file? How to open $efs files?

File type specification:

Encoded and encrypted file type icon Encoded and encrypted file type

The $EFS file extension is mainly related to EFS files encrypted in Microsoft Office Word 2003. In order to decrypt these files you need a proper certificate from the original creator of the document. EFS is short for encrypted file system.

The default software associated to $efs file type:

Microsoft Word icon

Microsoft Corporation logoMicrosoft Word  Microsoft Windows software

Company or developer:
Microsoft Corporation

A popular word processor that started with Word for MS-DOS in 1983 and for year is now a core application of Microsoft Office suite. Microsoft Word offers powerful word processing and text editor features that allow users to easy create high quality documents.

Almost every, if not every, computer user knows .doc and .docx Word documents.

Help how to open $EFS files:

This file type is not meant to be opened directly, there is no software that could open and work with it directly, or there is no information available in public sources about opening this file type. This is usually the case of some internal data files, caches, temporary files etc.

How to convert file with extension $EFS:

As far as we know, this .$efs file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

List of software applications associated to the .$efs file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open $efs file, edit $efs file, convert $efs file, view $efs file, play $efs file etc. (if exist software for corresponding action in's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is ableto perform the specified software action, such as opening, editing or converting $efs files.

  • Open $efs file
  • Create $efs file

Software that open $efs file - Encrypted EFS file

Programs supporting the exension $efs on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about Microsoft Word for open $efs file action.

Microsoft Windows:

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