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my CAC Card reader is not working with Firefox

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Using Win7 64 bit I can log in to secure site with IE 9 using my CAC Card but cannot log in to the same sites using Firefox 24.3 ESR. Is there a setting I need to change?

Using Win7 64 bit I can log in to secure site with IE 9 using my CAC Card but cannot log in to the same sites using Firefox 24.3 ESR. Is there a setting I need to change?

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check to see if this helps you solve your problem

Firefox - CAC