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What is mdnsresponder.exe?

Part of Bonjour by Apple Computer

What is it?

Bonjour Service provides a general method to discover services on a local area network. The software is widely used throughout Mac OS, and allows users to set up a network without any configuration. It is used to find printers and file-sharing servers. iTunes uses Bonjour to find shared music, iPhoto to find shared photos. Bonjour for Windows and AirPort Base Stations may be configured to use Wide Area Bonjour which allows for wide area service discovery via a configured DNS server.
Description of mdnsresponder.exe from Apple Computer
Bonjour, also known as zero-configuration networking, enables automatic discovery of computers, devices, and services on IP networks using industry standard IP protocols. It is a key component of Apple applications (e.g., iTunes, iPhoto), services (e.g., MobileMe) and devices (e.g., Apple TV, and Airport). Developers can easily leverage Bonjour from both Mac OS X and iOS.
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How does mdnsresponder.exe run?

Service - mdnsresponder.exe runs as a background Windows service called 'Bonjour Service' (##Id_String1.6844F930_1628_4223_B5CC_5BB94B879762##). This service runs as the SYSTEM account with extensive privileges on the local computer, and acts as the computer on the network. ##Id_String1.6844F930_1628_4223_B5CC_5BB94B879762## runs as a program that can be started by the Service Controller and that obeys the service control protocol. This type of service runs in a process by itself.


What is the community is seeing?What is the community is doing?
About 0.2% of all Boost users have the mdnsresponder.exe process running.Of the 0.2% of mdnsresponder.exe users, 18.0% have disabled it.
How resource intensive is mdnsresponder.exe?
Comparison based on the average resource utilization across all programs.
0.00187% CPU18709.0%
Average CPU utilization across all programs is 0.00001%.
     1.02 MB RAM4.7%
Average private memory utilization across all programs is 21.53 MB.
         4 GDI objects2.7%
Average number of GUI GDI and USER objects for all programs is 150.
Typical file (disk image) location:
C:\Program Files\bonjour\mdnsresponder.exe

Are there other versions of Bonjour?

What else is related?

What Windows OS versions does this run on?

Microsoft Windows XP (5.1.2600.196608)

About Apple Computer, Inc.

Started by Steve Jobs and Steve Wozniak, Apple has expanded from computers to consumer electronics over the last 30 years, officially changing their name from A More...
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File details

File name: mdnsresponder.exe
Name: Bonjour
Description: Bonjour Service
Version: 1,0,2,9
Size: 224 KB
Original file name: mDNSResponder.exe

Resource utilization

CPU utilization averages
Total CPU: 0.0036299294%
Privileged CPU: 0.0017590320%
User CPU: 0.00187089741515%
Privileged CPU time: 1609.38 ms
Privileged CPU time /min: 0 ms
Memory utilization averages
Committed memory: 23.79 MB
Peak committed memory: 26.79 MB
Paged memory: 1.02 MB
Peak paged memory: 1.98 MB
Paged system memory: 24.68 KB
Non-paged system memory: 4.83 KB
Working set memory: 274 KB
Peak working set memory: 2.84 MB
Min working set memory: 126 KB
Private memory: 1.02 MB
Page faults: 6,544
Page faults /min: 0
Process I/O averages
Total read operations: 9
Total read transfer: 30.87 KB
Total write operations: 8
Total write transfer: 436 Bytes
Total other operations: 12,844
Total other transfer: 892.28 KB
GUI Object Averages
GDI objects: 4
USER objects: 3
Handle count average: 92
Thread count average: 5
Thread resource averages

Process details

Runs as (owner): System
Integrety level: Undefined
Windows platform: 32-bit
Runs as a service: Yes
Parent Process
Process Command
"C:\Program Files\Bonjour\mDNSResponder.exe"

Service details

Name: ##Id_String1.6844F930_1628_4223_B5CC_5BB94B879762##
Service name: Bonjour Service
Service type: Win32OwnProcess
Description: “##Id_String2.6844F930_1628_4223_B5CC_5BB94B879762##”

Network connectivity

UDP: LISTENING on port 5353
TCP: localhost on port 5354
Windows Firewall allowed program: Yes

Image hashes

MD5: cc4e72a0fa7f62175c8bb42ba2caa3d5
SHA-1: cda1cb0988bad21915721740d44a03e6a8790f44
SHA-256: 40d0fd8ee77274a8edc67e9aadf50a42fc18120d2e913c063b6279a873dab289

PE image details

Subsystem: Windows Console
File packed: No
Import Table
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