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Flash wont run in Firefox, screen shows up saying it has crashed, seems like it starts and then immediately crashes and I cannot watch any videos on any site

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I just dont know what to do, I have uninstalled and resinstalled flash like 50 times and its like it just starts and crashes immediately and I cannot play any videos, Works fine in Chrome but Firefox, just crashes out. I tried disabling all the add-ons and that didnt finx the problem, Its installed and shows active but its like firefox isnt recongnixing it

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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
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Yeah I tried all those things and nothing seems to correct it.

Just cant figure last attempt at disabling protected mode but it is all jargon to me, to create a line of Protected Mode = 0.

I entered that file and got to the folder and clicked on it but woulnt let me add the line of text Protected Mode = 0.

Just seems like I may need to delete firefox completely with preferences and everythign and see if it works....Just so frustrated since it ran an update on FF to Version 25. and I have Flash 11.9 and tried 11.7 and say problem.

It says Flash has crashed when I go to any website so I hit reload and same screen comes up saying flash has crashed so it seems like it is starting and crashing instantly

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You may need to copy the mms.cfg file to the desktop if you can't save the changes.

  • (Windows 64bit) C:\Windows\SysWOW64\Macromed\Flash
  • (Windows 32bit) C:\Windows\System32\Macromed\Flash
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Could you post some submitted crash reports?

  1. Enter about:crashes in the Firefox address bar and press Enter. A Submitted Crash Reports list will appear, similar to the one shown below.
  2. Copy the 5 most recent Report IDs that start with bp- and paste them into your response here.


Thank you for your help!

More information and further troubleshooting steps can be found in the Adobe Flash plugin has crashed - Prevent it from happening again article.

Note that Mozilla is developing its own Flash player named Shumway expected to replace Adobe Flash (v28/29).