I did this and named the concatenated file big.crt My original crt / key pair in the https_ports was cert=server.crt and key=server.key Now I have cert=big.crt and key=server.key Digicert's SSL Certificate checker now says no certificates found where it used to say "Untrusted certificate" If this because the key no longer matches the concatenated big.crt? TIA :Ron -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/How-to-install-Intermediate-CA-cert-in-squid-tp1024286p4664705.html Sent from the Squid - Users mailing list archive at Nabble.com.