**OS **Windows 10
Katalon Studio Version 5.4.1
## Environment (for Web testing)
Browser: Internet Explorer 11
## Steps to reproduce
1. Katalon Studio → Project → Settings → Execution → Custom → Add
2. Type ‘ie_private’ for name
3. Click [value] to launch ‘Custom Execution Configuration Builder’ → Add
4. Select ‘IE’ for driver name
5. Click [Preferences][…] to launch ‘Driver Builder’ → Add
6. Type ‘ie.forceCreateProcessApi’ for name, type = Boolean, value = True
7. Add another property with name='ie.browserCommandLineSwitches", type = list, value = [-private] (type=string, value = ‘-private’)
8. Press ‘OK’ button to finish.
9. Run any test case with ‘Custom capabilities’ → ‘ie_private’(that we just created)
## Expected Behavior
We expected IE run with InPrivate mode.
## Actual Behavior -
IE didn’t launch, and the test case was running forever unless pressing the stop button.
## Screenshots / Videos
