What is the 509 file?
The 509 file extension can be associated with several types of files. Most often, however, a file with such an extension is associated with the Internet Security Certificate format. 509 files are supported by Windows operating systems. The 509 file is one of the Web Files files, just like 303 of the other files found in our file information database.
A program that can open the 509 file is e.g. Opera browser. This software was released by Opera Software ASA. However, you can also use other applications, e.g. Mozilla Firefox, Microsoft Internet Explorer.
Programs, that can open .509 files
Microsoft Corporation
Microsoft Internet Explorer
|
Windows |
Opera Software ASA
Opera browser
|
Windows |
Mozilla
Mozilla Firefox
|
Cross-platform |
How to open a .509 file?
If you have problems opening the file 509, then in most cases the problem is only the lack of the proper application installed. Select one of the programs from the list and install it on your device. The operating system should automatically associate the 509 file format with the installed program. If not, right click on your 509 file and select from the menu "Open with" . Then select the installed program and confirm the operation. Now all 509 files should automatically open with the selected program.
