DCO File Extension
DisCryptor Encrypted Archive
- File Type dco
- Developer COSECT, Ltd.
- Popularity
- Application DisCryptor ENTERPRISE
- Category Encoded Files, Compressed Files
- Format Binary
What is a DCO file?
DisCryptor Encrypted Archive works with the DCO file extension and is classified under Encoded Files and Compressed Files, with a total of 1106 files.
DCO files are supported by Windows. You can open a DCO file using one of 3 programs, for example DisCryptor ENTERPRISE, DisCryptor PERSONAL and DisCryptor FREE.
Programs that support DCO files
How to open a DCO file?
The most common reason why a DCO file cannot be opened is the absence of required software. To fix this, select a compatible program from the list. Then visit the official developer website via the provided link, download the program, and install it on your system.
The most popular programs for working with DCO files are DisCryptor ENTERPRISE, DisCryptor PERSONAL and DisCryptor FREE. To get the latest version of DisCryptor ENTERPRISE, open the COSECT website where a universal installer for all operating systems is available.
Once setup is done, your operating system should assign DisCryptor ENTERPRISE as the default app for DCO files.
Make DisCryptor ENTERPRISE the default DCO viewer
Changing the default program in Windows
- Start by right-clicking on your DCO file and selecting the "Open With" option. From there, click "Choose another app" to continue;
- Inside the popup window, scroll through the list of applications and specifically choose DisCryptor ENTERPRISE as the application to associate with your DCO file;
- Check the "Always use this app" checkbox and click "OK".
Change the default app to open files on Mac
- Right click or use Control + Left Click on the desired DCO file to access a dropdown menu of actions;
- Select "Open in application" and click "Other";
- Scroll down to the bottom of the window, where you will find the "Enable" menu. Default, "Recommended Programs" will be selected;
- In this menu, choose "All Programs" and navigate to DisCryptor ENTERPRISE. Check the box next to "Always open in app" to make it the default program.
How to edit a DCO file?
To edit DCO files, you need to install specialized software that allows you not only to open but also to modify encoded files. Online DCO editors usually provide fewer features than software created specifically for DisCryptor Encrypted Archive.
List of Top DCO editors 2026
Following these criteria, we have put together a list of recommended DCO editors.
| DCO Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| DisCryptor PERSONAL | COSECT | Windows | 4.9 out of 5 (42 reviews) |
| DisCryptor ENTERPRISE | COSECT | Windows | 4.8 out of 5 (39 reviews) |
| DisCryptor FREE | COSECT | Windows | 4.5 out of 5 (38 reviews) |
Finding answers to DCO file problems
If you encounter issues with DCO files, don’t worry—most can be fixed with minor software adjustments. Refer to the troubleshooting tips below.
What are the signs that my DCO file is damaged?
Corrupted DCO encoded files may have one or more of the following symptoms:
- Poor performance when editing a file in DisCryptor ENTERPRISE;
- Opening or processing the file in DisCryptor ENTERPRISE or other programs causes instability or crashes in the program;
- The file shows errors when trying to open it or does not open completely;
- Unexpected expansion of the total size of the DCO file;
- Working with the file triggers the display of error messages;
Why does DisCryptor ENTERPRISE quit or crash unexpectedly?
DisCryptor ENTERPRISE crashes can be attributed to outdated software. Make sure you have installed the latest updates for COSECT products.
A computer restart is often the key to solving numerous common problems. That’s why, it is recommended to restart the computer before making any changes to the software settings.
What methods can be used to repair a damaged DCO file?
Use a recovery program to open the damaged DCO file and navigate to the "Repair" menu item. Wait for the recovery process to finish, as it will automatically repair damaged encoded files.