OfficeExpert Simulation Bots can also be used for Modern Authentication.
For browser-based simulations (Outlook Web, Skype Web...), OfficeExpert creates its own encrypted tokencache.bin file.
For client-based simulations (Outlook Client, Skype Client), the token trust-store of the client itself (Windows Credentials Store) is used.

The configuration itself differs slightly compared to all the other supported Authentication mechanism of OfficeExpert.

Requirements

• Modern Authentication has to be enabled for the end-user
• If you want to perform Outlook Client and Skype for Business Client Simulations, open and authenticate with username/password once
  This is important so that both applications are configured with Modern Authentication
• Skype for Business Client Sensor is NOT supported to run as a Windows Service
  It has to run as a console application! Skype Client UI is visible whenever this type of sensor is used with Modern Authentication

Configure

• Open the configuration.json and scroll to the "authentication" section
• Set the username within the section "modern"

• Save/close
• Start OfficeExpert.exe and wait ~1-3 minutes until the heartbeat has sent the first message to the appliance
• Open OfficeExpert UI and access Bots configuration

• Configure at least one Web Simulation (e.g. Outlook Web Sensor) and use Modern Authentication as Authentication Type
• Afterwards click Deploy Bot Configuration
• Stop OfficeExpert.exe on the Simulation PC
• Start OfficeExpert.exe with the following parameter

OfficeExpert.exe /authenticate

• A Modern Authentication form pops up

Username is pre-populated according to the the json config

Please enter the password once

• When done, a tokencache.bin file is created and OfficeExpert starts up

• Wait until the first measurement cycle is done to verify if all the configured sensors are running fine (yellow lines would indicate an issue)
• Stop OfficeExpert
• From now on, you can start OfficeExpert.exe as usual (as a Windows Service or Console Application)