Running scripts in Firefox and IE11

I am trying to get an answer from Past few days. Can we really run our scripts in Private Mode for Firefox and IE? I want to run this because i am testing an ecommerce website. So it needs a new Private session. Can anyone please guide me. Atleast if i can get an answer “Yes” or “No”. Whether Katalon can handle this? It would be great if someone can help me. Thanks in advance

Here is the guide for Firefox:
- Navigate to the same settings as Chrome but have Firefox selected (Execution -> Default -> Web UI -> Firefox)
- Add new dictionary ‘firefox_profile’ key.
- Add browser.privatebrowsing.autostart key with value = true in that dictionary

For IE I haven’t tried it yet but I think it is possible.

Can you please let me know the firefox browser version you tried? because the same thing mentioned is not working in Firefox 54.0 32 bit

I thinkFirefox 54 is not supported by Katalon Studio. 56+ is required. See