CNN File Extension
ADO-network Connection Configuration
- File Type cnn
- Popularity
- Application Notepad++
- Category Configuration Files
What is a CNN file?
Files with the CNN extension are specifically tied to ADO-network Connection Configuration, a Configuration Files type, and there are 200 files in this category.
CNN file support extends to various operating systems, including Windows, Linux and Mac OS. To open a CNN file, you can choose from 7 programs such as Notepad++, Gedit and Sublime Text.
Programs that support CNN files
How to open a CNN file?
If you cannot open a CNN file, it is most often due to missing software. Select a program from the list according to your operating system. Then go to the official website of the program developer, download it, and install it on your device.
Thanks to their popularity, Notepad++, Gedit and Sublime Text are often the go-to programs for managing CNN files. If you need the newest version of Notepad++, just access the Notepad++ Team website. From there you can download the installer compatible with all systems.
Once Notepad++ is installed, the OS should configure it as the default tool for opening CNN files.
Make Notepad++ the default CNN viewer
Change the default app to open files on Mac
- Right click or use Control + Left Click on the desired CNN file to access a dropdown menu of actions;
- Choose "Open in Application" and click "Other";
- Towards the bottom of the window, find the "Enable" menu, which is already set to the default option, "Recommended Programs";
- In this menu, select "All Programs" and search for Notepad++. Check the box next to "Always open in app" to make it the default option.
Change a default app in Windows
- Start by right-clicking on your CNN file, then select the "Open with" option and choose "Choose another app" from the menu that appears;
- Inside the popup window, scroll through the list of applications and specifically choose Notepad++ as the application to associate with your CNN file;
- Check the "Always use this app" checkbox and click "OK".
Finding answers to CNN file problems
If CNN files are giving you trouble, small modifications to your software can help. Check out the troubleshooting tips below to fix these issues.
What can lead to sudden Notepad++ crashes?
Insufficient updates for Notepad++ Team products can cause Notepad++ to crash. Be sure to regularly install the latest software updates.
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 is the recommended approach to repair a damaged CNN file?
Use a recovery program to open the damaged CNN file, and in the menu, click "Repair" to start the repair operation. Wait for the recovery process to finish as it will automatically restore the damaged configuration files.
What are the ways to check if my CNN file is damaged?
Characteristics of corrupted CNN configuration files can include:
- The file encounters problems during the opening process or shows error indications;
- Editing the archive in Notepad++ is hampered by poor overall performance;
- The file causes Notepad++ or other software to hang or crash during various operations;
- An unexplained increase in the size of the CNN file;
- Actions performed on the file result in the appearance of error notifications;
How to edit a CNN file?
To modify CNN files, you need to install special software that makes it possible to open and edit configuration files. Online CNN editors are more restricted compared to software designed for ADO-network Connection Configuration.
Best CNN editors 2026
According to these factors, we have compiled a list of available CNN editors.
| CNN Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| Sublime Text | Sublime HQ Pty | Windows, Mac OS, Linux | 4.9 out of 5 (44 reviews) |
| TextEdit | Apple | Mac OS | 4.9 out of 5 (44 reviews) |
| Notepad++ | Notepad++ Team | Windows | 4.8 out of 5 (43 reviews) |
| Atom | - | Windows, Mac OS, Linux | 4.5 out of 5 (41 review) |
| Gedit | GNOME | Linux | 4.2 out of 5 (42 reviews) |
| PSPad | Jan Fiala | Windows | 4.2 out of 5 (45 reviews) |
| Windows Notepad | Microsoft | Windows | 4.1 out of 5 (43 reviews) |