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Multiple firefox.exe in background processes crashing browser

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After a recent automatic update my old problem with Firefox Quantum came back. Every time I open Firefox browser I get multiple 4-6 firefox.exe running in the background processes. When I go into details and try to end process tree it crashes my browser. When I open Firefox it starts all over again. I have gone into about:preferences and

   De-select ‘Use recommended performance settings’
   Set Content process limit value to ‘1’ from its default value

I have also gone into about:config and switched browser.tabs.remote.autostart to false. Still have the same problem.

After a recent automatic update my old problem with Firefox Quantum came back. Every time I open Firefox browser I get multiple 4-6 firefox.exe running in the background processes. When I go into details and try to end process tree it crashes my browser. When I open Firefox it starts all over again. I have gone into about:preferences and De-select ‘Use recommended performance settings’ Set Content process limit value to ‘1’ from its default value I have also gone into about:config and switched browser.tabs.remote.autostart to false. Still have the same problem.
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Additional System Details

Installed Plug-ins

  • Shockwave Flash 32.0 r0

Application

  • User Agent: Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:68.0) Gecko/20100101 Firefox/68.0

More Information

My_Cheese_Is_Slippin'
  • Top 10 Contributor
83 solutions 871 answers

Hi activecarbon, 4-6 processes running for Firefox is normal. Crashing is not. Have you submitted any Crash Reports? See this article: Firefox keeps crashing at startup to help resolve the crashes.

Hi activecarbon, 4-6 processes running for Firefox is normal. Crashing is not. Have you submitted any Crash Reports? See this article: [https://support.mozilla.org/en-US/kb/firefox-keeps-crashing-startup Firefox keeps crashing at startup] to help resolve the crashes.
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Question owner

How come my firefox browser crashes when I close out the firefox.exe processes in the background of my task manager?

How come my firefox browser crashes when I close out the firefox.exe processes in the background of my task manager?
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My_Cheese_Is_Slippin'
  • Top 10 Contributor
83 solutions 871 answers

Hi, Those are the processes that Firefox needs to run. When you 'End Task' you are "killing" the browser.

Hi, Those are the processes that Firefox needs to run. When you 'End Task' you are "killing" the browser.
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FredMcD
  • Top 10 Contributor
4254 solutions 59579 answers

In the address bar, type about:crashes<enter>.

Note: If any reports do not have BP in front of the numbers/letters, click it to submit them.

The crash report is several pages of data. We need the report numbers to see the whole report.

Using your mouse, mark the most resent 7 - 10 Submitted crash reports, and copy them. Now go to the reply box and paste them in.

aboutcrashesFx57

For more help on crash reports, see; https://support.mozilla.org/en-US/kb/firefox-crashes-asking-support +++++++++++++++++++++++ If you can't get Firefox to open, you will have to do this the hard way.

https://support.mozilla.org/en-US/kb/mozillacrashreporter Open the file browser/explorer on your computer. Note: You may have to enable Show Hidden Folders / Files. Enter this in the address bar;

Windows: %APPDATA%\Mozilla\Firefox\Crash Reports\submitted Win 7/Vista: C:\Users\<username>\AppData\Roaming\Mozilla\Firefox\Crash Reports\submitted Win XP/2000: C:\Documents and Settings\<username>\Application Data\Mozilla\Firefox\Crash Reports\submitted

Mac OS: /Users/<username>/Library/Application Support/Firefox/Crash Reports/submitted Linux: /home/<username>/.mozilla/firefox/Crash Reports/submitted

The crash report is several pages of data. We need the report numbers to see the whole report.

Copy the most recent 5-7 File Names in the folder. Post the information in the reply box.

In the address bar, type '''about:crashes'''<enter>. '''Note:''' If any reports do not have '''BP''' in front of the numbers/letters, click it to submit them. '''The crash report is several pages of data.''' '''We need the report numbers to see the whole report.''' Using your mouse, '''mark''' the most '''resent 7 - 10''' '''Submitted''' crash reports, and '''copy''' them. Now go to the reply box and '''paste''' them in. ;[[Image:aboutcrashesFx57|width=500]] For more help on crash reports, see; https://support.mozilla.org/en-US/kb/firefox-crashes-asking-support +++++++++++++++++++++++ If you can't get Firefox to open, you will have to do this the hard way. '''https://support.mozilla.org/en-US/kb/mozillacrashreporter''' Open the file browser/explorer on your computer. '''Note:''' You may have to enable '''Show Hidden''' '''Folders / Files.''' Enter this in the address bar; '''Windows:''' %APPDATA%\Mozilla\Firefox\Crash Reports\submitted '''Win 7/Vista:''' C:\Users\'''<username>'''\AppData\Roaming\Mozilla\Firefox\Crash Reports\submitted '''Win XP/2000:''' C:\Documents and Settings\'''<username>'''\Application Data\Mozilla\Firefox\Crash Reports\submitted '''Mac OS:''' /Users/'''<username>'''/Library/Application Support/Firefox/Crash Reports/submitted '''Linux:''' /home/'''<username>'''/.mozilla/firefox/Crash Reports/submitted '''The crash report is several pages of data.''' '''We need the report numbers to see the whole report.''' Copy the most recent '''5-7 File Names''' in the folder. Post the information in the reply box.
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My_Cheese_Is_Slippin'
  • Top 10 Contributor
83 solutions 871 answers

@FredMcD, It looks like they are crashing it in Task Manager

@FredMcD, It looks like they are crashing it in Task Manager
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My_Cheese_Is_Slippin'
  • Top 10 Contributor
83 solutions 871 answers

activecarbon, To help clarify for you, the processes are all named firefox.exe because they are relevant to operations within the browser. Your extensions, plug-ins, tabs, etc. all require a separate process to run.

activecarbon, To help clarify for you, the processes are all named firefox.exe because they are relevant to operations ''within'' the browser. Your extensions, plug-ins, tabs, etc. all require a separate process to run.
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