Hi

I will admit that I have never tried to do what you are attempting (and welcome comments and assistance from fellow contributors), but have you got the en-GB version of Firefox installed?

You can download a copy from here.

Support for the command line switch to start Firefox with a specific locale has been removed.

• https://developer.mozilla.org/en-US/Command_Line_Options

You can only use a pref (intl.locale.requested) to select the locale. You can possibly use/copy a user.js file to the profile folder or set up Selenium to initialize this pref.

Seburo said

Hi I will admit that I have never tried to do what you are attempting (and welcome comments and assistance from fellow contributors), but have you got the en-GB version of Firefox installed? You can download a copy from here.

Thank you for you inputs. Can I get old versions of firefox in specific language.

cor-el said

Support for the command line switch to start Firefox with a specific locale has been removed.

• https://developer.mozilla.org/en-US/Command_Line_Options

You can only use a pref (intl.locale.requested) to select the locale. You can possibly use/copy a user.js file to the profile folder or set up Selenium to initialize this pref.

When I added preference in selenium setup like below, still I am unable to launch firefox with en-gb

FirefoxProfile ffprofile = profile.getProfile("default");                                 ffprofile.setPreference("intl.accept_languages","en-gb");                                 driver = new FirefoxDriver(ffprofile);

my problem resolved

You need to set intl.locale.requested for the user interface language like I wrote above.

• ffprofile.setPreference("intl.locale.requested","en-GB");