What is mDNSResponder.exe?

mDNSResponder.exe is part of Bonjour and developed by Apple Inc. according to the mDNSResponder.exe version information.

mDNSResponder.exe's description is "Bonjour Service"

mDNSResponder.exe is digitally signed by Apple Inc..

mDNSResponder.exe is usually located in the 'C:\Program Files\Bonjour\' folder.

None of the anti-virus scanners at VirusTotal reports anything malicious about mDNSResponder.exe.

If you have additional information about the file, please share it with the FreeFixer users by posting a comment at the bottom of this page.

Vendor and version information [?]

The following is the available information on mDNSResponder.exe:

Product nameBonjour
Company nameApple Inc.
File descriptionBonjour Service
Internal namemDNSResponder.exe
Original filenamemDNSResponder.exe
Legal copyrightCopyright (C) 2003-2008 Apple Inc.
Product version1,0,5,11
File version1,0,5,11

Here's a screenshot of the file properties when displayed by Windows Explorer:

Product nameBonjour
Company nameApple Inc.
File descriptionBonjour Service
Internal namemDNSResponder.exe
Original filenamemDNSResponder.exe
Legal copyrightCopyright (C) 2003-2008 Apple Inc.
Product version1,0,5,11
File version1,0,5,11

Digital signatures [?]

mDNSResponder.exe has a valid digital signature.

Signer nameApple Inc.
Certificate issuer nameVeriSign Class 3 Code Signing 2004 CA
Certificate serial number095e20a80b54a45d36f6c06b9b02f93a

VirusTotal report

None of the 51 anti-virus programs at VirusTotal detected the mDNSResponder.exe file.

None of the 51 anti-virus programs detected the mDNSResponder.exe file.

Folder name variants

mDNSResponder.exe may also be located in other folders than C:\Program Files\Bonjour\. The most common variants are listed below:

Other files also named mDNSResponder.exe

mDNSResponder.exe (157 votes)

Hashes [?]


Error Messages

These are some of the error messages that can appear related to mdnsresponder.exe:

mdnsresponder.exe has encountered a problem and needs to close. We are sorry for the inconvenience.

mdnsresponder.exe - Application Error. The instruction at "0xXXXXXXXX" referenced memory at "0xXXXXXXXX". The memory could not be "read/written". Click on OK to terminate the program.

Bonjour Service has stopped working.

End Program - mdnsresponder.exe. This program is not responding.

mdnsresponder.exe is not a valid Win32 application.

mdnsresponder.exe - Application Error. The application failed to initialize properly (0xXXXXXXXX). Click OK to terminate the application.

What will you do with the file?

To help other users, please let us know what you will do with the file:

What did other users do?

The poll result listed below shows what users chose to do with the file. 73% have voted for removal. Based on votes from 33 users.

User vote results: There were 24 votes to remove and 9 votes to keep

NOTE: Please do not use this poll as the only source of input to determine what you will do with the file.

Malware or legitimate?

If you feel that you need more information to determine if your should keep this file or remove it, please read this guide.

Please select the option that best describe your thoughts on the information provided on this web page

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Please share with the other users what you think about this file. What does this file do? Is it legitimate or something that your computer is better without? Do you know how it was installed on your system? Did you install it yourself or did it come bundled with some other software? Is it running smoothly or do you get some error message? Any information that will help to document this file is welcome. Thank you for your contributions.

I'm reading all new comments so don't hesitate to post a question about the file. If I don't have the answer perhaps another user can help you.

Raghu Veer writes

4 thumbs

This file is related to Bonjour Service of Apple Inc which will be installed along with other Apple products like Apple Safari, Quicktime etc. I remember this in the updated list offered by Apple Software occasionally.

It has a Digital Signature as well.

# 19 Jan 2009, 23:47

Roger Karlsson writes

0 thumbs

"mDNSResponder is a Bonjour system service that implements Multicast DNS Service Discovery for discovery of services on the local network, and Unicast DNS Service Discovery for discovery of services anywhere in the world. mDNSResponder is built into Mac OS X and can be downloaded as part of Bonjour for Windows. Applications like iTunes, iPhoto, iChat and Safari use mDNSResponder to implement zero-configuration network music sharing, photo sharing, chatting and file sharing, and discovery of remote user interfaces for hardware devices like printers and web cameras. mDNSResponder is also used to discover and print to Bonjour printers and USB printers connected to the AirPort Extreme and Express base stations. mDNSResponder is open source, and hardware device manufacturers are encouraged to embed the mDNSResponder source code directly into their products to benefit from zero-configuration networking."


# 10 Jun 2009, 2:14

Robert Dixon writes

-2 thumbs

I own a HP PAVILLION NOTEBOOK and it seems to be going through a routine where the touchpad drops out and then the audio disapears I have looked and looked but being a novice i have found nothing to answer me why this is happening There is usually a problem with the Mute Sync file but nothing i can repair!! This is begginning to be a more regular problem and its really affecting my tablet and its use.Any info would be fantastic,thank you

# 13 Sep 2016, 20:36

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