If you are seeking information about file extensions, then you are in the right place at right time.

Details of extension .sess

On this page, we're going to take a closer look at the .sess file extension, which is related to PHP Session Data. We'll explain what exactly a .sess fileformat is and how you can use it. If you're interested in learning more details about this type of file, we'll show you where to find them. And if you ever need to convert .sess files into different formats, we'll give you some tips on how to do that too. Let's see the file format associated with this file extension!


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sess file - PHP Session Data

PHP Session Data

The SESS file is a PHP Session Data. PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML.
Category: Data files
Program name: -
Mime-type: application/octet-stream
Magic bytes (HEX): -
Magic string (ASCII): -
Related extensions:
.cfm ColdFusion Markup Language
.jsp Java Servlet
.aspx ASP.NET Page
.ph Perl Header

The .sess file extension might not only belong to a single type of file, there could be various kinds that use it. Keep in mind that files with the .sess extension may contain various content types. If you have helpful information about this extension, write to us!

Could someone have spelled the .sess file extension wrong?

In our database, we came across the following similar extensions:

.sesx Adobe Audition Session
.swss ClarisWorks 3 Spreadsheet
.ses SPECCTRA Session File
.sss Coda Style Sheet
.ess Ekahau Site Survey Binary Container

The .sess extension is frequently misused

People sometimes confuse the .sess filename extension. Based on the searches on our site, here are the most common misspellings from the past year.

sesx (1), swss (1), ses (1), sss (1), ess (1)

Having trouble opening a .sess file?

If you want to open a .sess file on your computer, you just need to have the appropriate program installed. Incorrect settings for the .sess association can trigger this error.

Windows can't open this file:

File: example.sess

To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program whith which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2016/2019/2022, Windows 7, Windows 8, Windows 10, Windows 11, Linux, Mac OS X, macOS, iOS, Android