Avast internet security blocking casting webpage from chrome

Hi,

I have Avast internet security, and when I try to cast via the Chrome browser it says ‘No devices found’.
When I disable the Avast, and try again it finds my chrome cast device.

How do I exclude this from Avast? I have gone through forum posts but nothing has been helpful.

My machine is Windows 10 Pro 64 bit.

I am using Avast Internet security Program version 19.2.2364 (build 19.2.4186.431)

Any help would be appreciated.

Thanks

Set the Avast Firewall to private mode and reboot.

The firewall profile is already set to private network.

Contact support: https://support.avast.com/contact