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Suddenly my Firefox has started coming up in Portuguese. I have reset the default language to English several times with no results. It has to be associated with the recent upgrade. How do I get the default language back to English?

Suddenly my Firefox has started coming up in Portuguese. I have reset the default language to English several times with no results. It has to be associated with the recent upgrade. How do I get the default language back to English?

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What language version of Firefox are you using and did you load language modules in Firefox? What site are you loading that it's changes the language version?

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