Bonjour 3.1.0.1 Jun 2026

In Bonjour 3.1, the core functionality is handled by the daemon. This background process listens for and responds to mDNS queries on UDP port 5353.

Bonjour is Apple Inc.'s implementation of Zero Configuration Networking (Zeroconf). This paper provides a technical analysis of the Bonjour 3.1 release, the architecture commonly identified by the file version 3.1.0.1 in Windows environments. It examines the transition from the older "mDNSResponder" architecture, the implementation of Link-Local addressing, Multicast DNS (mDNS), and DNS-Based Service Discovery (DNS-SD). This document also addresses the security considerations inherent in running a legacy zero-configuration service on modern networks. bonjour 3.1.0.1

: Many modern printers use Bonjour to make "AirPrint" or wireless printing possible. In Bonjour 3

Understand if Bonjour is safe to keep or remove for your other apps. SOLIDWORKS Bonjour Error Explained - Javelin Technologies This paper provides a technical analysis of the Bonjour 3

Bonjour 3.1 includes a DHCP-like mechanism. If a device is configured for DHCP but no DHCP server is available, Bonjour automatically assigns a link-local IP address (typically in the 169.254.0.0/16 range). This ensures devices can still communicate and discover services even in the absence of a router infrastructure.

SOLIDWORKS usually requires to function . If you have iTunes (specifically version 12.3 or newer) installed on your machine, it often installs Bonjour 3.1.0.1 by default .