CMBAK file format description

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

1 filename extension(s) found in our database.

.cmbak - CET Designer Drawing Backup

The CMBAK data files are related to CET Designer. The CMBAK file is a CET Designer Drawing Backup. CET Designer is a complete design, specification and visualization tool, allowing you to complete every step of the proposal process in one program.

CET Designer
Data files
- / -
CET Designer Drawing Backup related extensions:
VSE/VSAM Variable-Length Records Stored Data
Zemax Scattering Distribution Data
XL Toolbox Chart Design Data
SOBEK Water Quality Locations Data
RegexBuddy Source Code Template
SigmaWin+ Jog Speed Table Data

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

Can't open a .cmbak 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 .cmbak file extension is often given incorrectly!

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


Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Quantrix Modeler Backup Data

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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If you have useful information about the .cmbak file format, then write to us! >> CMBAK file