Hi Garri, Thanks for your responses mate ! I did not realize that the squid was compiled with proxy user. Well spotted ! It looks like permission's issue but squid error message is not giving away any more details. I will configure debug_options to see what is failing exactly. The modulus check is a good idea too so I will get this checked and post the results. Cheers Konrad -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/No-valid-signing-SSL-certificate-configured-for-HTTPS-port-tp4680434p4680437.html Sent from the Squid - Users mailing list archive at Nabble.com. _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users