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How to change interface language in new firefox? I downloaded English addon but it doesen't work. What to do?
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hi, you can download the right version for your language from https://www.mozilla.org/firefox/all/ - just run the setup on top of your current installation.
What is the problem add-on?
Type about:preferences#content<enter> in the address bar.
On the bottom of the page, find Languages. To its right, press the Choose button. Make sure the correct language and district is selected.