Opening a DCO File

The DCO file type is primarily associated with DisCryptor.

DCO	File extension: DCO
	File type:	Encrypted Virtual Disk Archive

What is a DCO file?

DCO files mostly belong to DisCryptor by COSECT, Computer Security Technologies Ltd. DisCryptor offers users data encryption of whole disks, files and also folders. It contains advanced security tools such as data shredder or security keys. The DisCryptor solution secures encryption of portable media (for example USB memory stick or ZIP disk) so you can also use it in case you need to install the program on other computers. This file type is supported by DisCryptor Personal and DisCryptor Enterprise. A limited free version is available for files but it does not support this format.

How to open a DCO file

You need a suitable software like DisCryptor to open a DCO file. You need a suitable software like DisCryptor from COSECT, Computer Security Technologies Ltd. to open a DCO 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 DCO file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a DCO file directly in the browser:. Just drag the file onto this browser window and drop it.

Online DCO Text Viewer

Choose your .dco file to analyze

or drag and drop it here

Online File Viewer

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Can't Open Your .DCO File? Try These Steps

Because .DCO files can originate from various programs, they aren't universally openable.

Identify the Source: If received from a security-focused colleague, it may be a DisCryptor Encrypted Virtual Disk Archive. From a developer, it might be a proprietary data object.
Check the Header: Open the file in a hex viewer to inspect the first bytes.
- Random, unreadable characters often indicate an encrypted volume.
- "PK" indicates a standard ZIP-based archive.
- Readable XML suggests a configuration file.
Use the Original Software: The original program is usually required; try DisCryptor by COSECT, or ask the sender for the correct tool.
Use this Webpage: Drag and drop your file into our viewer to detect its format, extract readable metadata, and preview contents.

Technical Data for DCO File Extension

Related files:

dc0, zlib, wad, rhl

a dco Encrypted Virtual Disk Archive is a special file format by COSECT, Computer Security Technologies Ltd. and should only be edited and saved with the appropriate software.

How to solve problems with DCO files

Associate the DCO file extension with the correct application.
Update your software that should actually open encrypted virtual disk archives. Because only the current version supports the latest DCO file format. Search, therefore, e.g. on the COSECT, Computer Security Technologies Ltd. manufacturer website after an available DisCryptor update.
To make sure that your DCO file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .DCO file online - secure, fast, and no downloads needed.