File Extension Library

.DER File Extension

  • Category: Web Files
  • Format: Binary

What are .DER files and how to open them?

Can't open .DER 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 .DER file.

What is a .DER file extension?

.DER file extension has been classified as Web Files. The format of .DER file is Binary

.DER is DER Certificate File

Digital certificate file created in the Distinguished Encoding Rules (DER) format; contains a binary representation of the certificate; commonly used for storing X.509 certificates in public cryptography.

All standard Web browsers recognize digital certificates provided by secure websites.

List of all softwares that can open the DER Certificate File
Microsoft Internet Explorer
Mozilla Firefox
Apple Safari
Mozilla Firefox
Apple Keychain Access
Mozilla Firefox

How to fix problems with .DER files

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