• Teams Toolkit Debug FAQ
• Overall
• Which ports will be used?
• What to do if some port is already in use?
• Error
• Reason
• Mitigation
• What to do if I want to add my own environment variables for debugging?
• What to do if I want to use my own tunneling service instead of the built-in one for Bot or Messaging Extension?
• Reason
• Mitigation
• What to do if Teams shows "App not found" when the Teams web client is opened?
• Error
• Reason
• Mitigation
• What to do if Teams shows "Something went wrong" when the Teams web client is opened?
• Error
• Reason
• Mitigationn
• What to do if Teams shows "Permission needed" when the Teams web client is opened?
• Error
• Reason
• Mitigation
• What to do if I do not want to install the development certificate?
• Reason
• Mitigation
• How to manually install the development certificate for Windows Subsystem for Linux (WSL) users?
• Reason
• Mitigation
• Method 1: Trust the development certificate in browser
• Method 2: Trust the development certificate in Windows
• SPFx known issue on Teams workbench debug on macOS/Linux
• Error
• Reason
• Mitigation
• Error "Value cannot be null. (Parameter 'provider')" when starting bot/api project
• Error
• Reason
• Mitigation