To disable a proxy network connection on your computer, you can follow these simple steps:

1. Windows:

- Click on the Start button and type "Internet Options" in the search bar.

- Select "Internet Options" from the search results.

- In the Internet Properties window, go to the "Connections" tab and click on the "LAN settings" button.

- In the Local Area Network (LAN) Settings window, uncheck the box next to "Use a proxy server for your LAN."

- Click "OK" to save the changes and then click "OK" again to close the Internet Properties window.

2. Mac:

- Click on the Apple menu and select "System Preferences."

- In the System Preferences window, click on "Network."

- Select the network connection for which you want to disable the proxy (e.g., Wi-Fi or Ethernet) from the list on the left.

- Click on the "Advanced" button in the bottom right corner.

- Go to the "Proxies" tab and uncheck any protocols that are enabled, such as HTTP, HTTPS, or FTP.

- Click "OK" to save the changes and then close the Network window.

3. Linux:

- Open the Terminal.

- Type the following command to open the network configuration file in a text editor:

sudo nano /etc/environment

- Find any lines that set proxy environment variables (e.g., http_proxy, https_proxy) and comment them out by adding a "#" at the beginning of each line.

- Save the changes and close the text editor.

By following these steps, you can easily disable a proxy network connection on your computer. Keep in mind that you may need administrative privileges to make these changes, especially on Windows and Linux systems. If you're using a company-issued device, it's always a good idea to consult with your IT department before making any network configuration changes.