Ok, to be sure that we understand each other... My Sub2_CA_entire_chain.pem looks like this: -----BEGIN CERTIFICATE----- XXXXXXXXXXXXXXXXXXXXXXXXXX -----END CERTIFICATE----- -----BEGIN CERTIFICATE----- YYYYYYYYYYYYYYYYYYYYYYYYYYYYY -----END CERTIFICATE----- -----BEGIN CERTIFICATE----- ZZZZZZZZZZZZZZZZZZZZZZZZZZ -----END CERTIFICATE----- where XXXXXXXXXXXXXXXXXXXXXX is Root_CA certificate, YYYYYYYYYYYYYYYYYYYYYYYYYYYYY is Sub1_CA certificate and ZZZZZZZZZZZZZZZZZZZZZZZZZZ is Sub2_CA certificate. For me this a certificate chain which in that special case equals concatenated file. Am I correct? Gabriel -- View this message in context: http://freeradius.1045715.n5.nabble.com/EAP-TLS-Windows-7-Problem-with-chain... Sent from the FreeRadius - User mailing list archive at Nabble.com.