CERT file format description

Many people share .cert files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .cert file can be edited, converted or printed with. On this page, we try to provide assistance for handling .cert files.

3 filename extension(s) found in our database.

.cert - Netscape Certificate Index

The CERT data files are related to Netscape Navigator. The CERT file is a Netscape Certificate Index. Netscape Navigator was a proprietary web browser. It was the dominant browser in terms of usage share in the 1990s. The Netscape Navigator seems to be no longer supported.

Netscape Navigator
Data files
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Netscape Certificate Index related extensions:
Unisys U-ACT Configurator Data
Tektronics RSA306 IQ Streaming Data
Avid Pro Tools Wave Cache Data
Norton Utilities Backup Data
OMA DRM Rights Object WebXML
FLEXnet Manager Debug Log

.cert - Open Virtual Machine Format Certificate

The CERT data files are related to Xen. The CERT file is an Open Virtual Machine Format Certificate. The Open Virtual Machine Format (OVF) specification is a hypervisor-neutral, efficient, extensible, and open specification for the packaging and distribution of virtual appliances composed of one or more VMs.

Data files
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Open Virtual Machine Format Certificate related extensions:
Xen HVM Configuration File
Open Virtual Machine Format Manifest
Xen Configuration File

.cert - Nintendo Switch Certificate Data

The CERT data files are related to Nintendo Switch. The CERT file is a Nintendo Switch Certificate Data. The Nintendo Switch is a video game console developed by Nintendo and released in 2017.

Nintendo Switch
Data files
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Nintendo Switch Certificate Data related extensions:
Ingres Embedded QUEL Source Code
Renault R-Link Firmware Update
Shutdown Scheduler Shared Notes Data
WS-FTP ASCII Binary Transfer Data
Ellisys Visual USB Trace Data
NASA VIRV Instruments Status

Naturally, other applications may also use the .cert file extension. Even harmful programs can create .cert files. Be especially cautious with .cert files coming from an unknown source!

Can't open a .cert file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


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 one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .cert file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

cdrt, cer, cet, crt, ert, vert

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

CorelDraw Template
Certificate File
MGL Avionics Enigma Route File
Lahey Fortran Compilation Error Data
QT Vertex Shader
Hitachi COBOL2002 Data

Operating systems

DataTypes.net currently supports the following operating systems:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

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DataTypes.net >> CERT file