Mozilla firefox download site AFAIK doesn't have yandex. So where are you getting that version from?

To make sure you download Firefox in the locale you want get it from www.mozilla.org/firefox/all/

You can also change the search engines and the default search engine in Firefox. https://support.mozilla.org/en-US/kb/add-or-remove-search-engine-firefox https://support.mozilla.org/en-US/kb/change-your-default-search-settings-firefox

There are a lot of search engine plugins to choose from at https://mycroftproject.com/

WestEnd said

Mozilla firefox download site AFAIK doesn't have yandex. So where are you getting that version from?

The Russian Firefox from Mozilla has Yandex as the defaukt search engine.

The OP is getting it from Mozilla if you watched the video. You may be thinking all locales of Firefox must have Google as the default search engine..

Mozilla actually wanted to get away from Google more which is what Mozilla did back in November 2014 in no longer making Google as the global default search engine in Firefox.

Fast forward to Firefox 57.0 in Nov 2017 when Mozilla went back to using Google as the default on U.S., Canada, Hong Kong and Taiwan because they needed a option to replace Yahoo in those areas that had Yahoo as default.

https://blog.mozilla.org/blog/2017/11/14/firefox-features-google-as-default-search-provider-in-the-u-s-canada-hong-kong-and-taiwan/

Then on March 7 the Yahoo search engine was removed as one of the default choices that Firefox came with (for users using Firefox 52 ESR, 57, 58, 59.0 and later) and later and were replaced with new search engines depending on locale.

You can see reasons for leaving Yahoo at https://support.mozilla.org/en-US/forums/contributors/712925

Thanks for answer, but this is not bug ? Why "Firefox without Yandex" have Yandex anyway or "Firefox with "en-US" locale" get Yandex automatically after restart browser, even you're have English version of Windows 10. This is so strange.

The Russian Firefox version probably comes with the Yandex search engine. You can disable or remove (hide) this search engine in "Options/Preferences -> Search".

• https://support.mozilla.org/en-US/kb/change-your-default-search-settings-firefox
• https://support.mozilla.org/en-US/kb/use-search-bar-firefox

• https://dxr.mozilla.org/mozilla-release/source/browser/components/search/searchplugins/list.json

BP8b7ME said

Thanks for answer, but this is not bug ? Why "Firefox without Yandex" have Yandex anyway or "Firefox with "en-US" locale" get Yandex automatically after restart browser, even you're have English version of Windows 10. This is so strange.

I think there may have been a link below the button you clicked on to download so you did not get the en-US locale.

The www.mozilla.org/firefox/all/ ensures you get what you want. This was the third link in Google search when you searched for download Firefox.

The file would still be firefox setup 65.0.2 .exe regardless if Russian or US English.

Also did you make sure you did not have both Russian and en-US version installed.