Charles Proxy Tool is used to capture logs for technical problems with Webex Desktop App (PT) for Windows and Mac.

Installation

Download and install Charles proxy from the following link:
https://www.charlesproxy.com/download/latest-release/

Charles is available for Windows (32/64-bit) and Mac OS X.

For help with the installation, see: https://www.charlesproxy.com/documentation/installation/

Note: Steps below are shown for the Mac OS. For Windows install help, see the above link.

Prerequisites - Settings

1. Launch Charles.   (Tips: If you are using VPN, disable the VPN first and then launch Charles. After that you can enable the VPN back.)
2. Go to Proxy Settings > select macOS.
3. Enable macOS Proxy:

3. Go to Proxy > Proxy Settings
4. Enable Use a dynamic port:

       

Install SSL Certificate to Authorize Charles Proxy

1. Go to Help > SSL Proxying > Install Charles Root Certificate

2.  Open Keychain Access. If the Charles proxy certificate installed under login, move it to System, then make sure the certificate is trusted:

3. Double click on it to edit the settings.
4. Under Trust > When using this certificate, set this to Always Trust:

      The certificate will now appear as trusted:       
 
Enabling SSL proxying for a particular site

1. Enter the site URL in the browser and Charles will capture the logs with the site and appear as below:

2. Go to Proxy > SSL Proxying Settings.
3. Click Add, and enter the site URL for which the decrypted traffic needs to be captured, enter 443 in the Port: field.
4. Select OK:

 
Verification
Now you can start to capture correct Charles logs for the site URL. If you want to capture other site URL, please repeat steps 1-3 above and ensure the URL was added to the SSL Proxying.

When properly configured, captures will appear as shown on the right side of the image below:



For more information on using Charles Proxy Tool, see: https://www.charlesproxy.com/documentation/using-charles/