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when l open firrefox, even after trying to reload and repair it, firefox appers on the screen once, but on the list of program, it appers twice as ''firefox.''

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why does he appers Twice even after repair it? the second eat some about half of the first listing of firefox ( ex 100 000K for the second one and 216 000K for the first) if I tried to take out the second one, Firefox closed. How can l repair this?

why does he appers Twice even after repair it? the second ''eat'' some about half of the first listing of ''firefox ( ex 100 000K for the second one and 216 000K for the first) if I tried to take out the second one, Firefox closed. How can l repair this?

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More than one process is normal for the current Firefox. http://www.ghacks.net/2016/07/22/multi-process-firefox/

Multi-process Firefox is codenamed "e10s". https://wiki.mozilla.org/Firefox/multiprocess

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That is probably OK and caused by Firefox using multi-process tabs (e10s).

Multi-Process Firefox: everything you need to know - gHacks Tech News:

You can disable multi-process tabs in Firefox by setting the related prefs to false on the about:config page.

  • browser.tabs.remote.autostart = false
  • browser.tabs.remote.autostart.2 = false