Opening an ONC File

The ONC file type is primarily associated with Cisco AnyConnect Secure Mobility Client.

ONC	File extension: ONC
	File type:	configuration file

What is an ONC file?

ONC files mostly belong to Cisco AnyConnect Secure Mobility Client. ONC files are configuration files written in JSON format used to set up VPN connections. They are designed for the Cisco AnyConnect Secure Mobility Client and are automatically imported to apply network settings.
When you open an ONC file, you will find details such as:

VPN server addresses
Authentication methods
Encryption and connection protocols

FilExt.com notes: The file is meant for system use. You can view its contents with a basic text editor, but it is best handled by the VPN client. For more details on its use and management, visit Cisco Secure Mobility Client.

How to open ONC files

You need a suitable software like Cisco AnyConnect Secure Mobility Client to open an ONC 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 ONC file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a ONC file directly in the browser:. Just drag the file onto this browser window and drop it.

Online ONC Text Viewer

Choose your .onc file to analyze

or drag and drop it here

Online File Viewer

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Programs that open and convert ONC files:

Cisco AnyConnect Secure Mobility Client
See the previous paragraphs to learn more about the main application. ONC files are often referred to as Cisco AnyConnect Secure Mobility Client settings because this type of file is primarily created or used by this software.
Cisco AnyConnect Secure Mobility Client
An .ONC file is a configuration file primarily associated with the Cisco AnyConnect Secure Mobility Client, a Virtual Private Network (VPN) solution. It stores connection parameters, including server addresses, authentication details, and encryption settings, enabling users to establish secure connections to protected networks. These files are typically created and managed by network administrators and distributed to users to facilitate VPN access. The .ONC format likely employs JSON (JavaScript Object Notation) for structuring and storing the configuration data due to its human-readable nature and ease of parsing by software. This file format is classified as VPN configuration.

Technical Data for ONC File Extension

File classification:

Settings

Related files:

ovpn, pcf, conf, otoset, acw, cfg, json

an onc configuration file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with ONC files

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