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firefox crashes when flash player is installed

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dwoollard
dwoollard
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After I upgrade to Firefox 21, I also upgraded to Flash Player 11. Now when I start Firefox it hangs up before it opens any site. I can only close it using task manager. When I uninstall Flash Player, Firefox works fine. I tried installing an older version of Flash, and that didn't work either. Windows 7.

After I upgrade to Firefox 21, I also upgraded to Flash Player 11. Now when I start Firefox it hangs up before it opens any site. I can only close it using task manager. When I uninstall Flash Player, Firefox works fine. I tried installing an older version of Flash, and that didn't work either. Windows 7.

All Replies (3)

lizhenry
lizhenry
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Hi there, you might try some of the suggestions in the "Firefox hangs" support article, https://support.mozilla.org/en-US/kb/firefox-hangs-or-not-responding -- specifically, the one about crashes or hangs that occur with Flash. Try disabling hardware acceleration. 

https://support.mozilla.org/en-US/kb/keep-flash-up-to-date-and-troubleshoot-problems#w_playing-flash-videos-makes-firefox-hang
dwoollard
dwoollard Úinéir na ceiste
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Thanks for the suggestions, but unfortunately none of them worked. I think it hangs up only on sites with Flash files in them. I can install Flash and it works fine until I reboot.

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
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You can check for problems with current Flash plugin versions and try these:

  • disable a possible RealPlayer Browser Record Plugin extension for Firefox and update the RealPlayer if installed
  • disable protected mode in the Flash plugin (Flash 11.3+ on Windows Vista and later)
  • disable hardware acceleration in the Flash plugin