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error:TypeErrornetscape.security.PrivilegeManager undefined

  • 1 reply
  • 31 have this problem
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  • Last reply by cor-el

jkckjkwk4
jkckjkwk4
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I keep getting this message when I open up firefox: error:netscape.security.PrivilegeManager is undefined and I have tried to Update add ons Java... I do it and it reads it was updated but when I close and reopen browser it still reads it Needs to be updated... HELP

I keep getting this message when I open up firefox: error:netscape.security.PrivilegeManager is undefined and I have tried to Update add ons Java... I do it and it reads it was updated but when I close and reopen browser it still reads it Needs to be updated... HELP

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cor-el
cor-el
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  • Top 10 Contributor
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This issue can be caused by an extension that isn't working properly.

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

  • Do not click the Reset button on the Safe mode start window or otherwise make changes.

Background:

Support for enablePrivilege has been removed in Firefox (Bug 546848), so it is no longer possible to get special elevated privileges by using this method.
Extensions do not need to use this (they already run code with proper privileges) and if web page use this then they will have to use other ways get what they want like providing a Firefox extension.