CATNLS file format description

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

1 filename extension(s) found in our database.

.catnls - CATIA NLS Data

The CATNLS data files are related to Catia. The CATNLS file is a CATIA NLS Data. CATIA (Computer Aided Three Dimensional Interactive Application) is a multi-platform CAD/CAM/CAE commercial software suite developed by Dassault Systemes and marketed world-wide by IBM.

Data files
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CATIA NLS Data related extensions:
Catia 3DMAP File
Catia 3D Geometry Data
Catia V4 Sequential Data
Catia Catalog
CATIA Analysis Data
CATIA Catalog Data

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

Can't open a .catnls 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.

Operating systems 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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