509 File Type

By:   |   Revised: December 05, 2018

Microsoft Silver

509 File Summary

There is one file type associated with the 509 File Extension, the Internet Security Certificate format. According to our database, five distinct software programs (conventionally, Internet Explorer developed by Microsoft Corporation) will enable you to view these files. 509 files are categorized ordinarily as Web Files.

The 509 File Extension can be viewed on the Windows, Mac, and iOS operating systems. They are supported on both desktop and mobile devices. 509 files have a "Low" Popularity Rating; this means that they are not present on most devices.

If you would like to learn more about 509 files and the software that opens them, please see the additional detailed information below. Also, you can learn how to do some basic 509 file troubleshooting if you are having trouble opening these files.

Low
Prevalence
9476
File Rank

/ 11690

Active

Relevance

5

December

2018

Refreshed

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Varieties of 509 Files


Primary 509 File Association

.509
File Name:.509
Category:Internet Security Certificate

This file is a security file offered by a 3rd party Certificate Authority like Thwate or VeriSign that validates a websites` authenticity. Its installation is done on a web server in order to establish the legitimacy of a particular website that the server hosts. 509 files are more often used to secure your server, web site transactions, logins, webmail and connections with an SSL Certificate.

Created by: Microsoft Corporation
Class:Web Files
Location: HKEY_CLASSES_ROOT\.509

Software Programs That Open The Internet Security Certificate:


Internet Explorer by Microsoft Corporation

Windows
Mac

Mozilla Firefox by Mozilla

Windows
Mac
iOS
Android
Linux
Solaris
illumos

Apple Safari by Apple

Windows
Mac
iOS
Android
Linux
Solaris
illumos

Adobe Acrobat DC by Adobe Systems Incorporated

Windows
Mac
Linux

Adobe Reader by Adobe Systems Incorporated

Windows
Mac

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509 Requests


OS Ranking

7 (45.73%)
10 (44.56%)
8.1 (5.41%)
XP (2.79%)
8 (0.97%)


509 Troubleshooting


Common Problems Opening 509 Files

Missing Internet Explorer

When trying to open your 509 file, you get the error "Can't Open 509 File Type". Generally, this is experienced in %%os%% because Internet Explorer isn't installed on your PC. Your operating system cannot associate your 509 with Internet Explorer, so double-clicking the file won't work.


Tip: Another 509-related program can be selected to open the file by clicking "Show Apps" and finding the application.


Internet Explorer is Out-of-Date

In some cases, you might have a newer (or older) version of a Internet Security Certificate file that is unsupported by your installed application version. Installing the latest version of Internet Explorer from Microsoft Corporation is recommended. This problem is predominately due to having a Internet Security Certificate file version that was created by a newer version of Internet Explorer than what you have installed on your PC.


Tip: You can sometimes get hints about the right program version by right-clicking on the 509 file, selecting "Properties", and looking at the version information.


Summary: Not having the right Internet Explorer version on your computer can cause problems opening 509 files.


Other Causes of 509 File Opening Problems

Errors opening Internet Security Certificate files can still occur even with the latest Internet Explorer software installed on your computer. If you're still experiencing problems opening 509 files, there could be other computer problems. Problems unrelated to software:

  • Invalid 509 file references in the Windows Registry (the "phonebook" of the Windows Operating System)
  • The 509 file description within the Windows Registry was removed
  • Internet Explorer or another 509 application experienced a flawed installation
  • Your 509 file is corrupted (issues with your Internet Security Certificate file itself)
  • Your 509 has adversely impacted by malware
  • Device drivers of the hardware associated with your 509 file are corrupt or out-of-date
  • Windows has inadequate resources to open your Internet Security Certificate file

Quiz: Which of the following is not a MIME type?









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