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Invalid Certificate Message Using Firefox?


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Here I am again, with another computer problem, why isn't life ever simple?

On firing up my laptop this morning using Firefox as my browser, a messgage appeared on screen telling me my SFR certificate expired yesterday, the message advised me that somebody could be trying to attack my computer. After trying to boot using Google Chrome the same message appeared, but when I use Internet Explorer 8 I can connect as usual with no mention of expiring certificates.

I have run my Avast software and it found no viruses on my computer.

Any ideas please as to why Firefox and Google are giving me these messages, and Internet Explorer 8 is not? I do no wish to go onto any sensitive websites, i.e. online banking with my certificate possibly under attack.

All views most welcomed.
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Many thanks for the links pachapapa.

I updated my version of Java, and restarted my laptop, SFR then asked for my password, and after entering the password, hey presto back online with no dodgy invalid certificate messages. Still strange why Internet Explorer didn't seem to have a problem, but who cares.

Once again many thanks.

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