.509 File

.509 is Internet security certificate

Key Features: .509 File Extension

Features	Description
File Extension	.509
Format	N/A
Created by	509
Category	Internet related

What's on this Page

How to open:
How to convert:

What is an .509 file?

The 509 file extension is used to secure your server, web site transactions, logins, webmail and connections with an SSL Certificate. Choose GlobalSign SSL Certificates for the highest levels of strong security, confidence and trust in your web site, corporate assets and online brand.

Mime: application/x-x509-ca-cert

How to open:

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:

As far as we know, this .509 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.

509

.509 - File Extension

Internet related

N/A

How to solve problems with 509 files

Associate the 509 file extension with the correct application. On :
Windows: Right click on any 509 file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.509 files". Mac: Right click (or Ctrl-click) the 509 file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
Update your software that should actually open .509 is Internet security certificate. Because only the current version supports the latest 509 file format. Search, therefore, e.g. on the 509 manufacturer website after an available .509 is Internet security certificate update.
To make sure that your 509 file is not corrupted or virus-infected, get the file again and scan it with antivirus software.