How To Remove or Uninstall Bonjour and mDNSResponder.exe

Bonjour, also known as zero-configuration networking or Zeroconf. It enables automatic discovery of computers, devices, and services on IP networks. Bonjour uses industry standard IP protocols to allow devices to automatically discover each other without the need to enter IP addresses or configure DNS servers (naming servers).

Why Do I Have Bonjour or mDNSResponder.exe running?

If you’ve installed software like Apple’s iTunes, Adobe Premiere Pro, Skype or Gizmo then you probably already a Bonjour folder in your Program Files directory. The service starts automatically and runs a process named mDNSResponder.exe which cannot be ended by Windows Task Manager. If you wanted to remove, uninstall or stop Bonjour from being on your computer then it can seam impossible to find any uninstaller for it! There isn’t even an entry for it in Control Panel’s Add or Remove Programs.

What is Bonjour and mDNSResponder.exe?

How do I safely uninstall Bonjour and remove mDNSResponder.exe process?

Removing Bonjour from your computer.

1. Click on Start > Run > type the command below and hit OK.

“%PROGRAMFILES%\Bonjour\mDNSResponder.exe” -remove

2. Open the directory C:\Program Files\Bonjour
3. Rename the mdnsNSP.dll file in that folder to mdnsNSP.bak
4. Restart your computer
5. Once you are back in windows Delete the C:\Program Files\Bonjour folder

Step one above will stop and remove Bonjour Service from your computer. To confirm this, click on Start > Run and type services.msc. Look for Bonjour Service name. Congratulations if it’s not there, you’ve successfully removed it.

Other utilities for removing Bonjour or mDNSResponder.exe
The Gizmo Project has created a small tool TurnOffBonjour - that turns off and removes Bonjour service.

But it will not remove the Bonjour folder from Program Files. You will still need to manually delete the Bonjour folder after restart (Step 5 above). The reason why you don’t delete the folder before a restart is in case there’s a problem then the Bonjour files are still there for you to restore the service.

If you encountered problems after uninstalling or removing Bonjour, you can always download and reinstall Bonjour by using the following link.

There is also a new wizard tool called Au Revoir, Bonjour that will remove the Apple Bonjour Service from Windows computers.


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