No SSL certifcate Captive Portal

Hi,

Thank you for reaching out to Sophos Community.

Kindly share the Case ID.
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Hello Sophos User1152 ,

Thank you for reaching out to the community, you are using the wildcard cert is that cert installed in the client machine's mmc under the trusted root certification authorities? 

Hi Sophos User1152,

Is the "Use insecure HTTP instead of HTTPS" checkbox ticked under Configure > Authentication > Web authentication > Captive portal behavior?

Thanks,
Peter