Hi @sam_park,
This might be an issue with your Windows firewall exceptions. Please verify that Roon and associated processes are exempt for your Windows machine.
Do you have a second router in your setup? If so, there are addition steps required to Bridge the modem that are specific to the Home Hub. Let us know and we’ll help you out.
Additionally, you might need to add the above Roon exceptions to your Home Hub firewall. That’s what this user seems to have done to resolve their own port forwarding error with the Bell Home Hub 3000: Roon Arc not able to connect to Roon Core (Bell Home Hub 3000, Single-Router)
Thank you!