Hello @mmmunir966, Has your issue been resolved? I am trying to build MQTTS communication and encountered the same issue when connecting to MQTT over SSL. E (109296) esp-tls-mbedtls: mbedtls_ssl_setup returned -0x7f00 E (109296) esp-tls: create_ssl_handle failed E (109296) esp-tls: Failed to open ne...