By default, Fiddler cannot read encrypted (HTTPS) traffic; it only sees the "Connect" tunnels. To see the actual data: Fiddler Classic Using Fiddler - Telerik.com
: Open the application. Upon first launch, Fiddler automatically registers as the System Proxy , meaning it will immediately start showing live HTTP traffic from your default browser. fiddler setup
: Get the installer from the official Telerik website . By default, Fiddler cannot read encrypted (HTTPS) traffic;
Before you begin the installation, decide which version fits your workflow: Fiddler cannot read encrypted (HTTPS) traffic
: The original, Windows-only power tool. Best for advanced scripting and legacy environments.
: Look for the "Capturing" indicator in the bottom-left corner. You can toggle this on or off by pressing F12 or via File > Capture Traffic . 3. Configuring HTTPS Decryption