This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Èròjà atẹ̀lélànà yii ni a ti fi pamọ́ fọ́jọ́ pípẹ́. Jọ̀wọ́ béèrè ìbéèrè titun bí o bá nílò ìrànwọ́.

Firefox takes over entire PC

  • 1 èsì
  • 1 ní ìṣòro yìí
  • 10 views
  • Èsì tí ó kẹ́hìn lọ́wọ́ FredMcD

more options

Since I installed the latest version of Firefox (under Win10), frequently my PC slows down to a crawl. The task monitor then shows 6 or 7 Firefox applications running and using almost all my storage. My PC is not the newest, its an old HP with a gigabyte main storage, but Firefox seems to multiply its processes without limit. Is there any way to limit this?

Since I installed the latest version of Firefox (under Win10), frequently my PC slows down to a crawl. The task monitor then shows 6 or 7 Firefox applications running and using almost all my storage. My PC is not the newest, its an old HP with a gigabyte main storage, but Firefox seems to multiply its processes without limit. Is there any way to limit this?

All Replies (1)

more options

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


Start Firefox in Safe Mode {web link}

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?