Attempting to connect to HiveMQ Cloud MQTT Broker which requires TLS. I've connected to other MQTT brokers that didn't require TLS with no issues. I've created an MQTT Client Driver and created a TCP/IP Port child. None of the TLS settings were successful so I download a pem file from HiveMQ, converted it to a crt file using OpenSSL and imported it to my PC but it does not appear in the list of certs in the TLS tab of the TCP/IP Port child. Looking for some assistance with connecting to HiveMQ Cloud.

If they certificate is issues by a recognized certificate authority then it should be recognized automatically. In that case, just be sure you are using the HiveMQ port number for TLS traffic.

Assuming you do need to insall the certificate for the broker, check out the following from the HiveMQ Forum:

https://community.hivemq.com/t/tls-certificates/1068/6