This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Error Messages when starting firefox

  • 1 ŋuɖoɖo
  • 8 masɔmasɔ sia le wosi
  • 1 view
  • Nuɖoɖo mlɔetɔ n47412

more options

I have recently updated my browser on my Windows 7 PC from Internet Explorer to Firefox and it is working fine on my user profile. However, our computer has a second user profile for my husband (in order to keep our i-tunes accounts separate) and when ever he tries to access the internet via the new Firefox browser he gets the following error message: Microsoft Visual C++ Runtime Library Assertion Failed! Program... File: Common/npn_gate.cpp Line: 267 Expression: pPluginShim For information on how your program can cause an assertion failure, see the Visual C++ documentation on asserts (Press Retry to debug the application - JIT must be enabled) Buttons:- "Abort" "Retry" "Ignore"

I would really appreciate any help on how to resolve this issue in simple terms as neither me or my husband are very PC literate & I am at a loss as how to get the browser to work on this second user profile or even what the error message means.

Thanks :)

I have recently updated my browser on my Windows 7 PC from Internet Explorer to Firefox and it is working fine on my user profile. However, our computer has a second user profile for my husband (in order to keep our i-tunes accounts separate) and when ever he tries to access the internet via the new Firefox browser he gets the following error message: Microsoft Visual C++ Runtime Library Assertion Failed! Program... File: Common/npn_gate.cpp Line: 267 Expression: pPluginShim For information on how your program can cause an assertion failure, see the Visual C++ documentation on asserts (Press Retry to debug the application - JIT must be enabled) Buttons:- "Abort" "Retry" "Ignore" I would really appreciate any help on how to resolve this issue in simple terms as neither me or my husband are very PC literate & I am at a loss as how to get the browser to work on this second user profile or even what the error message means. Thanks :)

All Replies (1)

more options

Recent crashes of certain multimedia contents (this includes Youtube videos, certain flash games and other applications) in conjunction with Firefox 13 are most probably caused by a recent Flash 11.3 update and/or a malfunctioning Real Player browser plugin.

In order to remedy the problem, please perform the steps mentioned in these Knowledge Base articles:

Flash Plugin - Keep it up to date and troubleshoot problems

Adobe Flash plugin has crashed - Prevent it from happening again

Flash 11.3 doesn't load video in Firefox

Other, more technical information about these issues can be found under these Links:

http://forums.adobe.com/thread/1018071?tstart=0

http://blogs.adobe.com/asset/2012/06/inside-flash-player-protected-mode-for-firefox.html


Please tell us if this helped!