The Chromecast is not being discovered due to a possible network issue or blocked mDNS protocol.

Possible solution:

If your Chromecast is not being discovered, it may be due to a network issue or a blocked mDNS protocol. Here are some steps to help you troubleshoot the issue:

  1. Verify that the network configuration is correct, including the VLAN, IP, and netmask. Connect a PC to the same network as the Chromecast and try pinging both the server and the PC to ensure they can communicate with each other.
  2. Check if mDNS is blocked by the router. mDNS is the discovery protocol used by the Chromecast to communicate with other devices on the network. If mDNS is blocked, the Chromecast may not be able to connect to the network. Check your router settings and make sure that mDNS is allowed.