CA_ file format description

Many people often share .ca_ files without providing instructions on how to use them. This can make it difficult for users to determine which program is compatible for editing, converting, or printing .ca_ files. To address this issue, we have created this page to offer assistance and guidance on handling .ca_ files. We provide information on compatible software, editing instructions and conversion options to help users effectively interact with .ca_ files.

Our aim is to simplify the process and promote seamless use of the .ca_ file format.

1 filename extension(s) found in our database.

.ca_ - Compressed Microsoft Cabinet File

The CA_ archive files are related to Expand. The CA_ file is a Compressed Microsoft Cabinet File. Some files in the software distribution are provided in compressed form. These files are indicated with an underscore character as the last character in their file type. CAB is the Microsoft Windows native compressed archive format.

Archive files
- / -
Compressed Microsoft Cabinet File related extensions:
Compressed Microsoft BMP Image
Microsoft Cabinet File
Compressed CHM File
Compressed Windows Help Content
Compressed COM File
Compressed CPL File

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

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

Based on searches conducted on our site in the past year, we have compiled a list of the most common misspellings. These frequent misspellings can cause confusion and hinder search accuracy. By providing this list, we aim to assist users in finding the correct information more easily and improving their overall search experience on our site.

These misspellings were the most common in the past year:

ac_, ca, cw_, da_

Is it possible that the filename extension is misspelled?

There is a possibility that the .ca_ filename extension is misspelled. To assist users in identifying potential errors, we provide a list of similar file extensions in our database.

Filename extensions similar to .ca_:

GKSetup Support Data
DATAIR FlexPlus Data
CLAN Conversation Analysis Data
CorelDraw Workspace Description Data
CaseWare Working Papers Compressed Client File
Compressed DAT File

Operating systems

At, we strive to provide a seamless user experience by ensuring compatibility with a wide range of operating systems. The following is a comprehensive list of the operating systems currently supported by

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

If you find the information on this page useful, please feel free to link to this page.

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