Bonjour 3.1.0.1 For Windows Page

| Alternative | Description | |-------------|-------------| | | Windows-native protocol (Web Services Dynamic Discovery) used by modern network printers. | | LLMNR | Link-Local Multicast Name Resolution – built into Windows, but less reliable than mDNS. | | ZeroConf (Python) | For developers: a lightweight mDNS responder that runs in user space. | | Responder (Tool) | Security tool, not for regular use. | | Avahi for Windows | An open-source mDNS/DNS-SD daemon, but requires Cygwin or WSL. |

To uninstall silently later:

If you have uninstalled iTunes but Bonjour remains, you can remove it: Open the Windows app. Navigate to Apps > Apps & Features . Search for "Bonjour", click it, and select Uninstall . Security and Technical Considerations

Here is a deep dive into what this specific version does, why it’s on your machine, and whether you actually need it. What is Bonjour 3.1.0.1?

Some users report that version 3.1.0.1 consumes less RAM and CPU than later versions (e.g., 3.1.0.4 or the latest bundled with iCloud for Windows). On resource-constrained systems (old laptops, thin clients), this can be a deciding factor.