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What is mDNSResponder.exe?

Part of Bonjour by Apple

What is it?

Bonjour 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 an appropriately configured DNS server.
Description of mdnsresponder.exe from Apple
“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.”
Download Boost and enjoy your PC. Speed up Bonjour and optimize your PC.

How does mdnsresponder.exe run?

Service - mDNSResponder.exe runs as a background Windows service called 'Bonjour Service' (Служба Bonjour). This service runs as the SYSTEM account with extensive privileges on the local computer, and acts as the computer on the network. Служба Bonjour 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.

Community

What is the community is seeing?What is the community is doing?
About 0.6% of all Boost users have the mdnsresponder.exe process running.Of the 0.6% of mdnsresponder.exe users, 10.0% have disabled it.
How stable is Bonjour?
Based on crash data discovered by Boost, stability is a measure of how sound this particular process and the average percent of times it crashes.
     mdnsresponder.exe0.03%
Typical program1.26%
How resource intensive is mDNSResponder.exe?
Comparison based on the average resource utilization across all programs.
0.00076% CPU7588.5%
Average CPU utilization across all programs is 0.00001%.
     1.88 MB RAM8.7%
Average private memory utilization across all programs is 21.53 MB.
 2 /min0.1%
Average I/O read and write operations for all programs is 2,253 per minute.
         4 GDI objects2.7%
Average number of GUI GDI and USER objects for all programs is 150.
47 context switches/sec47.0%
Average context switches for all programs is 100 per second.
Typical file (disk image) location:
C:\Program Files\bonjour\mdnsresponder.exe

Are there other versions of Bonjour?

mdnsresponder.exe - version 3,0,0,10
mdnsresponder.exe - version 3,0,0,10 (this)
mdnsresponder.exe - version 2.0.2.0
Why are multiple of the same versions listed?

What modules are loaded?

A module is a dynamic link library (DLL) or an executable file that is loaded into the process. Below is a list of non-system modules that are loaded by Bonjour.
atl.dll (Microsoft (R) Visual C++ by Microsoft)
atl.dll (Microsoft (R) Visual C++ by Microsoft)
dhcpcsvc.dll (DHCP Client Service by Microsoft)
mswsock.dll (Microsoft Windows Sockets 2.0 Service Provider by Microsoft)
umengx86.dll (BASH by Symantec)
mswsock.dll (Proveedor de servicios de Microsoft Windows Sockets 2.0 by Microsoft)
browserdefender.dll (Application Manager by Bit89)

What programs install mDNSResponder.exe?

Bonjour (by Apple Inc.)
Bonjour by Apple Inc. - Bonjour Service provides a general method to discover services on a local area network. The software is widely used throughout Mac OS and Windows for iOS devices, and allows users to set up a network without any configur
Program URL: www.apple.com/support/bonjour/
Program help URL: www.apple.com/support/
Install path: C:\Program Files\Bonjour\
Size: 616.3 KB
BonjourCore by Apple Inc.
Install path: C:\Program Files\bonjour
Bonjour-Druckdienste by Apple Inc.
Program URL: www.apple.com/de
Program help URL: www.apple.com/de/support
Install path: C:\Program Files\Bonjour Print Services\
Size: 3.17 MB
Bonjour Print Services by Apple Inc. - Bonjour Service provides a general method to discover services on a local area network including network printers. The software allows users to set up a network without any configuration. It is used to find printers and
Program URL: www.apple.com
Program help URL: www.apple.com/support/
Install path: C:\Program Files\Bonjour Print Services\
Size: 3.17 MB

What else is related?

dnssdx.dll (Bonjour by Apple)
explorerplugin.dll (Bonjour by Apple)
mdnsnsp.dll (Bonjour by Apple)
dnssd-hobbyist.dll (Bonjour by Apple)
jdns_sd.dll (Bonjour by Apple)
dnssd.dll (Bonjour by Apple)
mdnsnsp.dll (Bonjour by Apple)
dnssd.dll (Bonjour by Apple)
mdnsnsp.dll (Bonjour by Apple)
mdnsresponder.exe (Bonjour by Apple)
shellstreams.dll (iCloud Control Panel by Apple)
coreadi.dll (CoreADI by Apple)
iadcore.dll (iAd by Apple)
applebmdavlocalized.dll (iCloud Control Panel by Apple)
applephotostreamsdownloader_main.dll (iCloud Control Panel by Apple)
appleiedav.exe (iCloud Control Panel by Apple)
applephotostreamsdownloader.exe (iCloud Control Panel by Apple)
applephotostreamsps.dll (iCloud Control Panel by Apple)
applephotostreams_main.dll (iCloud Control Panel by Apple)
shellstreams64.dll (iCloud Control Panel by Apple)
icloud.exe (iCloud by Apple)
applephotostreams.exe (iCloud Control Panel by Apple)

Bonjour Stability

mdnsresponder.exe crashes or has encountered a critical error 0.8900% of the time.
1.  
Error: Stopped working (BEX)
Occurred: over 6 months ago
2.  
Error: Stopped working (BEX)
Occurred: over 6 months ago

What Windows OS versions does this run on?

Microsoft Windows XP (5.1.2600.131072)
Microsoft Windows XP (5.1.2600.196608)
Windows Vista (TM) Home Premium (6.0.6000.0)
Windows Vista (TM) Home Basic (6.0.6001.65536)
Windows Vista (TM) Home Premium (6.0.6001.65536)
Windows Vista (TM) Business (6.0.6002.131072)
Windows Vista (TM) Home Basic (6.0.6002.131072)
Windows Vista (TM) Home Premium (6.0.6002.131072)
Windows Vista (TM) Ultimate (6.0.6002.131072)
Windows 7 Home Premium (6.1.7600.0)
Windows 7 Professional (6.1.7600.0)
Windows 7 Ultimate (6.1.7600.0)

About Apple 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
Publisher: Apple Inc. (verified)
Name: Bonjour
Description: Bonjour Service
Version: 3,0,0,10
Size: 381.35 KB
Original file name: mDNSResponder.exe

Digital certificate

Issued to: Apple Inc.
Certificate authority: VeriSign
Expiration date: 6/27/2011

Resource utilization

CPU utilization averages
Total CPU: 0.0023134665%
Privileged CPU: 0.0015546118%
User CPU: 0.00075885467348%
Privileged CPU time: 1346830.2 ms
Privileged CPU time /min: 791 ms
CPU cycle count: 274,563,051
CPU cycle count /min: 15,845,644
Context switches /sec: 47
Memory utilization averages
Committed memory: 31.41 MB
Peak committed memory: 33.03 MB
Paged memory: 1.88 MB
Peak paged memory: 1.92 MB
Paged system memory: 53.24 KB
Non-paged system memory: 7.42 KB
Working set memory: 2.77 MB
Peak working set memory: 4.47 MB
Min working set memory: 2.33 MB
Private memory: 1.88 MB
Page faults: 17,067
Page faults /min: 7
Process I/O averages
Total read operations: 49
Read operations /min: 1
Total read transfer: 15.36 KB
Read transfer /min: 11 Bytes
Total write operations: 43
Write operations /min: 1
Total write transfer: 1.83 KB
Write transfer /min: 2 Bytes
Total other operations: 838,047
Other operations /min: 171
Total other transfer: 14.38 MB
Other Transfer /min: 4.21 KB
GUI Object Averages
GDI objects: 4
USER objects: 2
Resources
Handle count average: 118
Thread count average: 3
Thread resource averages
sechost.dll
advapi32.dll
advapi32.dll
advapi32.dll
advapi32.dll
advapi32.dll
sechost.dll
advapi32.dll
ntdll.dll
advapi32.dll
advapi32.dll
rpcrt4.dll
ntdll.dll
ntdll.dll

Process details

Runs as (owner): System
Integrety level: System
Windows platform: 32-bit
Runs as a service: Yes
Parent Processes
services.exe (Services and Controller app by Microsoft)
Child Processes
csrss.exe (Client Server Runtime Process by Microsoft)
wininit.exe (Windows Start-Up Application by Microsoft)
winlogon.exe (Windows Logon Application by Microsoft)
Process Command
"C:\Program Files\Bonjour\mDNSResponder.exe"

Service details

Name: Служба Bonjour
Service name: Bonjour Service
Service type: Win32OwnProcess
Description: “Позволяет аппаратным устройствам и программным службам выполнять автоматическую самоконфигурацию в сети и оповещать о своем присутствии.”

Network connectivity

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

Image hashes

MD5: db5bea73edaf19ac68b2c0fad0f92b1a
SHA-1: 74bb0197763e386036751bf30c5bbf4c389fa24e
SHA-256: 10f21999ff6b1d410ebf280f7f27deaca5289739cf12f4293b614b8fc6c88dcc

PE image details

CLR assembly: Yes
CLR NGENed: No
Subsystem: Windows Console
Langauge*: Microsoft Visual C# / Basic .NET
File packed: No
Import Table
advapi32.dll
iphlpapi.dll
kernel32.dll
netapi32.dll
ole32.dll
powrprof.dll
user32.dll
ws2_32.dll
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