How To Remove Bonjour mDNSResponder.exe

Apple Bonjour


How To Remove Bonjour mDNSResponder.exe

May 2, 2014

By: Rutledge Daugette


If you've recently installed an Adobe product on your Windows machine, such as Photoshop CS3/CS4, you may have an issue where your computer can see the network, but not the internet. This is usually caused by a program called mDNSresponder.exe, which is a Bonjour service that Adobe installs for network/internet communication. Unfortunately, this sometimes has a side effect of causing lack of internet connectivity.

The best way to determine if this is your issue, is to check your services (Start > Run > Services.msc) for either the "Bonjour" service or the service in the images below.

Adobe 1

ADobe 2


If you're having this issue, you'll want to remove the service as we show in the following steps, and you'll be back to browsing Reddit in no time! NOTE: if you have iTunes installed, you may have to repair or reinstall after doing this. Here's how to Remove Bonjour mDNSResponder.exe!

Step 1: Remove the Service and DLL

Open a Administrator Command Prompt by clicking on Start and then typing in "CMD". Once that comes up, right click on the program and select "Run as Administrator". Then run the following 2 commands to remove the program/service.

To Remove the Service:

For 32-Bit Windows Run:

"cd C:\Program Files\Bonjour" and hit Enter


"mdnsresponder.exe -remove" and hit Enter

For 64-Bit Windows Run:

"cd C:\Program Files (x86)\Bonjour" and hit Enter

"mdnsresponder.exe -remove" and hit Enter


You should get a "Removed Service "B"" message, which means it was successful.

To Remove the DLL:

For 32-Bit Windows Run:

regsvr32 /u "C:\Program Files\Bonjour\mdnsNSP.dll"

For 64-Bit Windows Run:

regsvr32 /u "C:\Program Files (x86)\Bonjour\mdnsNSP.dll"

A window should pop up saying "DllUnregisterServer in C:\Program Files (x86)\Bonjour\mdnsNSP.dll succeeded" meaning that the DLL has been removed.

Step 2: Delete the Bonjour Folder

For 32-Bit Windows Computers, browse to C:\Program Files\ and Delete the "Bonjour" folder.

For 64-Bit Windows Computers, browse to C:\Program Files (x86)\ and Delete the "Bonjour" folder.

Step 3: Reboot your computer


Once your computer comes back up, everythings should be back to working again! If you have/had iTunes installed, I recommend doing a repair or reinstall if you are having issues with this. If your computer blue screens after the reboot, try another reboot as it sometimes takes an extra time to get it working correctly.

It's also worth noting that if this doesn't work, always use System Restore to go back to a previous spot!

Sound off in the comments below if this worked for you, or you found something better!!

Rutledge Daugette
CEO and Founder

Founder of TechRaptor with a love of video games (B.S. in Game Programming) and technology. Started TechRaptor to create a place where people could come for quality content.

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