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CO_ file extension

The table below provides useful information about the .co_ file extension. It answers questions such as:

  • What is the .co_ file?
  • What program do I need to open a .co_ file?
  • How can the .co_ file be opened, edited or printed?
  • How can I convert .co_ files to another format?

Table of Contents

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ Compressed COM File

CO_ file is a Compressed COM 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.
CO_ format description not yet available
Category: Data files
Application: Expand
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
CO_ aliases:
CO_ related links:
CO_ related extensions:
Executable File

Compressed SYS File

Compressed DLL File

Compressed EXE File

Compressed HLP File

Compressed ISP File

Compressed IEC File

Compressed PPD File

Compressed CHM File

Compressed INI File

Other types of files may also use the .co_ file extension.

🚫 The .co_ file extension is often given incorrectly!

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

co, cp_, oc_

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

Cult3D Object
Compressed CPL File
Compressed OCX File

🔴 Can't open a .co_ 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 cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .co_ file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .co_ file extension, write to us!

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