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firewall keeps asking about running plugin container when Firefox CLOSES

John.Richards
John.Richards
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Recently updated to 52.5.3 ESR (yes I know is oldish)

When I CLOSE Firefox, my firewall brings up the message "Plugin container for Firefox is trying to launch C:\xxxxx\FlashPlayerPlugin_27_0_0_187.exe, or, use another program to gain access to priviledged resources"

Now I understand plugin container, but can not find why it is trying to RUN flash player when it CLOSES.

I have set the firewall to "deny" this action and remember the setting (Zone alarm) but everytime I close Firefox (which clears all history and caches) the alarm repeats.

Can anyone explain 1)why this wants to load at close and 2)how can I stop it!

Thanks

Recently updated to 52.5.3 ESR (yes I know is oldish) When I CLOSE Firefox, my firewall brings up the message "Plugin container for Firefox is trying to launch C:\xxxxx\FlashPlayerPlugin_27_0_0_187.exe, or, use another program to gain access to priviledged resources" Now I understand plugin container, but can not find why it is trying to RUN flash player when it CLOSES. I have set the firewall to "deny" this action and remember the setting (Zone alarm) but everytime I close Firefox (which clears all history and caches) the alarm repeats. Can anyone explain 1)why this wants to load at close and 2)how can I stop it! Thanks

All Replies (2)

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 10 Contributor
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I'm pretty sure Plugin Container won't fire up to run Flash if something isn't trying to start a Flash application (SWF).

I was going to guess that you had an add-on for cleaning Flash "supercookies" (Flash Local Storage Objects or LSOs) at shutdown, like the old BetterPrivacy extension. But when I look at your extensions list, I don't recognize any of them as having that feature. So... I don't know why Flash is starting.

Or, maybe, I wonder if Firefox itself might do that if you set it to clear cookies at shutdown? When I search for related threads, there were some complaints years ago about losing some Flash game data when Firefox is set to clear all cookies at shutdown. Hmm...

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 10 Contributor
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Here's an old thread I had forgotten about where we experimented with Firefox clearing Flash cookies at shutdown in Firefox 16: Why aren't Flash cookies cleared the first time I exit Firefox?

So... an alternate way to handle clearing cookies at shutdown is this combination of settings:

  • Firefox will: Use custom settings for history
  • [x] Accept cookies from websites
  • Keep until I close Firefox
  • Any sites you want allowed to set persistent cookies, you can use the Exceptions dialog, but I suspect there aren't any
  • [x] Clear history when Firefox closes
    • in "Settings" uncheck Cookies so they just expire naturally