Certificate error in Red in the address bar

[Guest]

i am using a smart card to do some governmental transaction through the
web,this smart card has to be used after installling a specific software
"Axalto client 5.3",any way,when i use this card through web it asks me to
click an authentication button to confirm the person ID on card, but i always
get a certificate error and it recomends to not to continue to web,my
question is why this always happens and how can i overcome this problem.

Note:i am using now IE 7.0,before i was using IE 6.0 with no problems

thank you

 

[Jon Kennedy]

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