SEF File Extension

The SEF file extension was created by Steganos and is also known as the Password Manager Container File. SEF is classified as a Encoded Files and This file is saved in a binary format, which requires a specific program to read its contents. You can open SEF files in Microsoft Notepad program.

Password Manager Container File Type

Password Manager Container File Type
Extension .sef
Developer Steganos
Popularity 5.0 (1 Votes)
Mime Type mime-type/not.available
Default Program Microsoft Notepad
Category Encoded Files
Format Binary
Updated 7/1/2025

What is a SEF File Type?

The stored passwords in an SEF file are created by the Steganos password software and are very powerful. When you log in to an online account, the software automatically enters your passwords so you don't have to remember them.NOTE: 2009 and the newer versions of Password Manager and Privacy Suite use the apos; extension .ESF file for this file.

Free Online SEF Tools & Apps

Access powerful and secure free online SEF tools to convert, view, edit, merge, split, and compare SEF files — all without installing any software. Our tools support the .SEF (Password Manager Container File) file extension and run smoothly in any modern browser.

Select a tool below to explore features and manage your SEF files directly from your device with ease.

SEF Files Common Issues

There are few common issues with the Password Manager Container File .SEF=11168 File Extensions while opening the .SEF=11168 files on Windows and MacOs, we have solution to those issues such as:

Can't Open SEF Files?

  1. You must have supported software programs installed for Password Manager Container File on your system such as Microsoft Notepad.
  2. Associate default Microsoft Microsoft Notepad program for *.sef (Password Manager Container File) files.


All Platform Software Programs for SEF File Extension

List of all softwares that can open the SEF files on each platforms such as Windows, Mac, iOS, Linux, Web and Android, you may click the each software link for more details for other supported formats for each software and the verified direct download links for each software with complete lisensing details.

Microsoft Windows logo image Open SEF File on Windows

Software License Developer
Microsoft Notepad image. Microsoft Notepad 1903 for Windows Bundled Microsoft
Notepad++ image. Notepad++ 6 for Windows Freeware Notepad Plus Plus

MacOs logo image - FileProInfo.comOpen SEF File on Mac OS

Software License Developer

Linux logo image - FileProInfo.comOpen SEF file on Linux

Software License Developer

Website logo image - FileProInfo.comOpen SEF file on Web

Software License Developer

iOS logo image - FileProInfo.comOpen SEF file on iOS

Software License Developer

Android logo image - FileProInfo.comOpen SEF file on Android

Software License Developer

About Licensing

  1. Free Trial This software are often used for an attempt period, like 14 days, before requiring payment. Some trial versions have a reduced feature set.
  2. Free This software is liberal to use. Examples include open-source , freeware software, like free programs supported by advertising.
  3. Free+ This software is liberal to download and use, but contains in-app purchases (IAP) to unlock additional content or functionality.
  4. Paid This software must be purchased so as to use it. it's going to be offered as a perpetual license or ongoing subscription.
  5. Included with OS This software is bundled with an OS , like Windows, macOS, or Android.

SEF file extension icon image.About SEF - Password Manager Container File

FileProInfo is to help you understand about the Password Manager Container File with *.SEF suffix, and provide the complete detail as how to open, edit, convert, merge, split and compare it with other related software programs, software download links and free online apps and tools.

Our professional team members at FileProInfo have been individually researched and verified the details for SEF. We want to be 100% accurate and publish the information about file formats, tools, apps and software programs that we have tested and validated.

If you would like to suggest any additions or updates to this page for SEF, please let us know.

Updated 7/1/2025