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what is purpose of plugin-container.exe?

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I just had an update to firefox; the next time I opened it my Norton Security-Insight flagged this plugin-I had to allow it because otherwise browser would not open. It is not listed in the plugin section of add-ons but went to program (86x)\mozilla firefox\plugin container.exe. Is this approved? Is it safe?

I just had an update to firefox; the next time I opened it my Norton Security-Insight flagged this plugin-I had to allow it because otherwise browser would not open. It is not listed in the plugin section of add-ons but went to program (86x)\mozilla firefox\plugin container.exe. Is this approved? Is it safe?

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There are some known conflicts of Norton with Firefox files, they're false positives, for example Bug 564389 - Norton Antivirus' "Insight Network" blacklisted plugin-container.exe.

Please see what is plugin-container and let us know of any further progress on this issue.

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this is helpful and reassuring-given the number of reports I am suprised that Norton Insight claims that it has only "10 prior users"

I guess I should feel fortunate that I was able to load it. Still not sure why it is not listed in FF plugin list.