Firefox changes it's language(s) itself
I have my languages in General -> Set Alternatives set to English (US) and English (UK) (because not all websites and even Firefox by default supports US IIRC). Also my default display language is US and keyboard is US (because some games and apps like CS:GO enforce US locale :( so cannot use UK, else I will have two English keyboards).
So for some reason Firefox just resets my alternatives or something to English (US) and my secondary language, so a lot of Firefox content is in the second language, not in English (US), and not in English (UK) because this one was removed for some reason.
Happened to me before, happens like a few times a month and I have to fix it every time manually. Appreciate any help.
Chosen solution
https://support.mozilla.org/en-US/kb/how-to-fix-preferences-wont-save
Note: Some software, like Advanced SystemCare with Surfing Protection, can protect files in the Firefox profile folder against changes. If you have such software then check the settings or uninstall this software.
Type about:support in the address bar and press Enter. Under the main banner, press the button; Copy Text To Clipboard.. Now in the Reply Box on the forum page, do a right-click in the box and select Paste.
If the data is too big, do not worry. It's the top part we need to look at.
This will show us your system details. No Personal Information Is Collected.
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Chosen Solution
https://support.mozilla.org/en-US/kb/how-to-fix-preferences-wont-save
Note: Some software, like Advanced SystemCare with Surfing Protection, can protect files in the Firefox profile folder against changes. If you have such software then check the settings or uninstall this software.
Type about:support in the address bar and press Enter. Under the main banner, press the button; Copy Text To Clipboard.. Now in the Reply Box on the forum page, do a right-click in the box and select Paste.
If the data is too big, do not worry. It's the top part we need to look at.
This will show us your system details. No Personal Information Is Collected.
FredMcD said
https://support.mozilla.org/en-US/kb/how-to-fix-preferences-wont-save Note: Some software, like Advanced SystemCare with Surfing Protection, can protect files in the Firefox profile folder against changes. If you have such software then check the settings or uninstall this software. Type about:support in the address bar and press Enter. Under the main banner, press the button; Copy Text To Clipboard.. Now in the Reply Box on the forum page, do a right-click in the box and select Paste. If the data is too big, do not worry. It's the top part we need to look at. This will show us your system details. No Personal Information Is Collected.
Thank you for your response. I have found that the Default Locale there is set to it, and i have prefs-n.js in my profile folder. I will try to delete them. So, default locale is set to the wrong one and I think I should reinstall the browser to fix it. Will do it, appreciate it.