Network loop or misconfigured multicast filtering.

: Historically available as a separate download (e.g., via FileHippo ).

: It utilizes UDP port 5353 to broadcast and listen for service advertisements on the local subnet.

Use 3.1.0.1 if you need legacy compatibility or have a very low-spec PC. For Windows 11 and modern peripherals, use the latest version (usually installed via iCloud for Windows or standalone Bonjour Print Services).