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) 2003-2011 Apple Inc.
Product version3,0,0,10
File version3,0,0,10

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) 2003-2011 Apple Inc.
Product version3,0,0,10
File version3,0,0,10

Digital signatures [?]

mDNSResponder.exe has a valid digital signature.

Signer nameApple Inc.
Certificate issuer nameVeriSign Class 3 Code Signing 2010 CA
Certificate serial number5fa2a6e514b187c52e1fea5240cb04e9

VirusTotal report

None of the 50 anti-virus programs at VirusTotal detected the mDNSResponder.exe file.

None of the 50 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)

TCP/UDP Listening Ports [?]

mDNSResponder.exe has been reported to listen on the following TCP/UDP ports.

PortProtocol# Occurrences
5354TCP v426
5353UDP v613
5353UDP v49
49665UDP v62
49665UDP v41
49667UDP v41
51536UDP v61
54230UDP v61
57248UDP v41
58273UDP v41
59735UDP v41
60253UDP v41
63485UDP v41

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. 63% have voted for removal. Based on votes from 27 users.

User vote results: There were 17 votes to remove and 10 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

Free online surveys

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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.

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