I experienced this issue on 2 different Blu-ray discs using the auto-detect of Blu-ray drive. When it attempts to open the disc, it prompts below:
Internet is required to open this Blu-ray disc.
If you have firewall software installed, please configure it to allow DVDFab to access the internet.
I have firewall configured to allow DVDFab for Internet access, and even tried it with firewall turned off but still same error.
Attached the log file.