Isrgrootx1.pem in SIM7600E

HI, I did manage to upload the pem in SIM 7600E module via AT command but while try to establish connection via AT command:


connection refused: not authorized

Do I missing something

Hi @tramanah ,

Great to see your interest in MQTT and HiveMQ Cloud, welcome to the community!

For HiveMQ Cloud Free and Pay As You Go, it is also required the TLS-SNI extension to be available and used by the client. When the TLS-SNI extension is enabled, it will add the server hostname to the “Client Hello” TLS packet. You can check the packet with Wireshark :

I hope it helps,
Dasha from HiveMQ Team