JD2 does not have a native GUI setting labeled "Default Browser Selector." Instead, changing the browser requires modifying a configuration file manually or using a command-line argument. 2. Method 1: Manual Configuration File Editing (Recommended) This method forces JD2 to bypass the OS default and use a specific browser executable.
java -jar JDownloader.jar -browser "path_to_browser.exe" jdownloader 2 change default browser
Create launch_chrome_profile.bat :