Opening COM_ Files

The COM_ file type is primarily associated with Adobe Acrobat Reader.

COM_	File extension: COM_
	File type:	Renamed PDF file

What is a COM_ file?

COM_ files mostly belong to Adobe Acrobat Reader. A *.COM_ file is a renamed compressed PDF file, often encountered when dealing with email attachments or file transfers. The underscore suffix is typically added by systems or software to indicate a temporary or renamed file. When a PDF file, commonly used for document sharing, is compressed, it reduces the file size for easier transmission. Sometimes, during this process or due to system limitations, the file extension might be changed to *.COM_, effectively masking the true nature of the file. To access the content, simply renaming the file back to *.PDF is usually sufficient. The compression itself is often transparently handled by PDF readers like Adobe Acrobat Reader.

How can I open a COM_ file?

You need a suitable software like Adobe Acrobat Reader to open a COM_ file. You need a suitable software like Adobe Acrobat Reader to open a COM_ file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your COM_ file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a COM_ file directly in the browser:. Just drag the file onto this browser window and drop it.

Online COM_ Text Viewer

Choose your .com_ file to analyze

or drag and drop it here

Online File Viewer

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4 Steps to Open an Unknown .COM_ File

Since .COM_ files come from different programs, they aren't universally openable.

Identify the Source: They are often emailed attachments bypassing security filters, or renamed PDF documents from Adobe Acrobat Reader workflows.
Check the Header: Inspect the first bytes in a hex viewer or text editor:
- %PDF indicates a renamed PDF file.
- MZ suggests a renamed Windows/DOS executable.
Use the Original Software: The original program is usually required; you may need Adobe Acrobat Reader or a Windows environment, but if uncertain, ask the sender.
Use this Webpage: Drag and drop your .COM_ file into our viewer to detect its format, extract readable text or metadata, and preview contents when possible.

Technical Data for COM_ File Extension

File classification:

Compressed Document

Related files:

com, serv, file3, stat_grps_nav

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: emu8086
EXEFile: %ProgramFiles%\emu8086\emu8086.exe

a com_ Renamed PDF file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with COM_ files

Associate the COM_ file extension with the correct application.
Update your software that should actually open renamed pdf files. Because only the current version supports the latest COM_ file format. Search, therefore, e.g. on the manufacturer website after an available Adobe Acrobat Reader update.
To make sure that your COM_ file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .COM_ file online - secure, fast, and no downloads needed.