Capturing Traffic from Microsoft Apps (Outlook and MSTeams)

Environment

Fiddler Everywhere 5.16.0 and above
3rd-party application Office 365 applications, Microsoft Outlook, MS Teams
Operating System Windows, macOS

Description

How can I capture traffic from Microsoft applications like MS Teams and Outlook?

Solution - Using System Capturing Mode

You can use the system capturing mode to capture traffic from Microsoft applications.

  • Stop the Fiddler Everywhere system capturing.

  • Stop and close all targeted Microsoft applications.

  • Start Fiddler Everywhere and enable its system capturing mode.

    On macOS, you can also use the network capturing mode.

  • Start all targeted Microsoft applications.

Solution - Using Fiddler's Terminal

Sometimes, you might be unable to use the system capturing mode (for example, due to local network/system restrictions or administrative policies). In that case, you can use Fiddler's terminal to capture traffic from all Microsoft applications that use MS Edge WebView 2.

  • Stop and close all targeted Microsoft applications.

  • Start the Fiddler's terminal instance.

  • Start the Microsoft application from within the started terminal instance.