COM File - opening and understanding

Did your computer fail to open a COM file? We explain what they are used for and recommend software that we know can open or otherwise handle your .COM files.

What is a COM file?

Contrary to popular belief, files with the .com extension have no relation to the .com top-level Internet domain names. Files that contain the .com file extension actually hold executable command files.

These COM files are executable files that contain commands that are used by a computer's operating system, very similar to the .exe files used by the DOS and Windows operating systems.

The .com file extension may also be used for Common Object Module files. The EICAR anti-virus software application also uses files with the .com file extension. In this case, the COM files contain anti-virus test files that are used by the software.

How to open COM files

You will need a program compatible with the specific file you are trying to open, as different programs may use files with file extension COM for different purposes.

We have not yet verified any programs for Windows that work with this specific file format. If you know one, please use the 'Suggest a program' link below. Thanks!

Suggest another file format using extension COM

While we know of one file format using the .COM file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .COM file.