IDP Requesting client Certificate

[Kobi Seviliya]

Hi

I have an Shibboleth IDP installed on a linux machine with Jetty and i have
a strange issue .
when users connect to the SP and being redirected to the IDP, some of them
(mostly Mac users) are getting a popup window asking the to identify
themselves using a client certificate ...
I only happens if a use has a client certificate on his local machine ,
other users don't get that prompt ...

Does anyone have any idea how i can control this behaviour ??

Thanks

kobi.

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