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Firefox opens multiple versions in task manager with only one window; CPU load now excessive.

  • 3 replies
  • 2 have this problem
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  • Last reply by FredMcD

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I have restarted in safe mode.

I have updated to latest version.

Task manager shows two versions of firefox running pushing CPU usage to 100% so I have to stop firefox using task manager. Also if I have more than on tab open, if I click back to another tab the page just hangs then reloads, wherein it used to just be there.

Windows 7; all updates in place. Cannot type anymore; I’d be all night whilst page is headed ‘Mozilla not responding’

Help appreciated.

I have restarted in safe mode. I have updated to latest version. Task manager shows two versions of firefox running pushing CPU usage to 100% so I have to stop firefox using task manager. Also if I have more than on tab open, if I click back to another tab the page just hangs then reloads, wherein it used to just be there. Windows 7; all updates in place. Cannot type anymore; I’d be all night whilst page is headed ‘Mozilla not responding’ Help appreciated.

All Replies (3)

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Tiggers said

Task manager shows two versions of firefox running

http://www.ghacks.net/2016/07/22/multi-process-firefox/

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

pushing CPU usage to 100% so I have to stop firefox using task manager. Also if I have more than on tab open, if I click back to another tab the page just hangs then reloads

As you already tried Firefox Safe Mode, Start your Computer in safe mode with networking. Then start Firefox. Try Safe websites. Is the problem still there?

Starting The Computer In Safe Mode;
Free Online Encyclopedia


https://support.mozilla.org/en-US/kb/firefox-slow-how-make-it-faster

https://support.mozilla.org/en-US/kb/firefox-uses-too-many-cpu-resources-how-fix

https://support.mozilla.org/en-US/kb/firefox-hangs-or-not-responding

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Managed to work through some older versions of firefox that works; from 2010!

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Please remember that old versions may have security issues.

I called for more help.