Devices are not able to register to MPAD console via HTTPS port 443.
Error from agent log: Unable to register device "ComputerName" on domain "domain.local"
One or more errors occurred.
An error occurred while sending the request.
The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel.
The remote certificate is invalid according to the validation procedure.
The certificate had only been installed on the MPAD server. The issue was resolved by installing the certificate on the client devices as well.