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Please help, I cannot open Firefox at all! crash ID: cf9fa02c-586d-4033-999b-a7a242110501 and Signature: mcffplg.dll@0x1cb20

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  • Last reply by joeyla

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It happened a few weeks a go, I have re-installed the Firefox but still didn't work. I can only open Internet Explorer. I cannot open Firefox and Google Chrome at all!. I am using windows 7. Please help, I want my Firefox back...

It happened a few weeks a go, I have re-installed the Firefox but still didn't work. I can only open Internet Explorer. I cannot open Firefox and Google Chrome at all!. I am using windows 7. Please help, I want my Firefox back...

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The crash is reporting a problem with the McAfee Site Advisor (mcffplg.dll), try uninstalling the McAfee Site Advisor and see if you can then start Firefox.

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Hi TonyE,

Thank you so much for your help, I just managed to do it today :) I installed Firefox 3.6.13 and not confident to use Firefox 4 again. What do you think?

And about McAfee Site Advisor, should I re-install it or leave it out?

Another question if you don't mind please... just curious why suddenly Firefox having problems with McAfee Site Advisor after many many years?

Thanks again, You are the Best :) I am so happy having Firefox back, it is lots better than IE!