Hi, I trying to update my software to use OpenSSL-1.1 and I having problems with DH callbacks When build with 1.1.0-pre5 the callback set with SSL_CTX_set_tmp_dh_callback is not being called, when using 1.0.x it is called as expected. I have build 1.1.0-pre5 from sources with default configuration, do I need any special build option for this to work? In my test the server and client enables only ADH ciphers, I see the following ciphers are enabled: ADH-AES256-GCM-SHA384 ADH-AES128-GCM-SHA256 ADH-AES256-SHA256 ADH-CAMELLIA256-SHA256 ADH-AES128-SHA256 ADH-CAMELLIA128-SHA256 ADH-AES256-SHA ADH-CAMELLIA256-SHA ADH-AES128-SHA ADH-SEED-SHA ADH-CAMELLIA128-SHA ADH-DES-CBC3-SHA The connection fails with error # = 337002677 message = error:141640B5:SSL routines:tls_construct_client_hello:no ciphers available I assume this is related to the DH callback not being called, and so ADH ciphers cannot be used? Any ideas why the DH callback is not being called, as I say the code works fine with all previous OpenSSL versions. Regards, Jos?