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What is dnsrslvr.dll?

Part of DNS Caching Resolver Service by Microsoft

What is it?

The caching resolver reduces DNS network traffic and speeds name resolution by providing a local cache for DNS queries.
Description of dnsrslvr.dll from Microsoft
Name query responses are cached for the TTL specified in the response (not to exceed the value specified in the MaxCacheEntryTtlLimit registry entry (HKLM\SYSTEM\CurrentControlSet\Services\Dnscache\Parameters)), and future queries are answered from cache when possible. DNS Resolver Cache Service supports negative caching. For example, if a query is made to a DNS for a particular host name and the response is negative, succeeding queries for the same name will be answered (negatively) from the cache for an amount of time equal to the value in the NegativeCacheTime registry entry (HKLM\SYSTEM\CurrentControlSet\Services\Dnscache\Parameters) (the default value is 300 seconds).
(dnsrslvr.dll is a system file that is installed with Windows)
Download Boost and enjoy your PC. Speed up DNS Caching Resolver Service and optimize your PC.

How is dnsrslvr.dll loaded?

Hosted service - dnsrslvr.dll is typically associtated with identifier name of cda9f1373805af88f6fa4f2064bba24d with and identifier of Dnscache. A Windows Hosted Service is a service that is implemented as dynamically-linked library (DLL) run under the (Service Host) SvcHost process.
DNS Caching Resolver Service is loaded by:

Community

What is the community is seeing?What is the community is doing?
About 0.4% of all Boost users have the dnsrslvr.dll file.Of the 0.4% of dnsrslvr.dll users, less than 1% have disabled it.
How resource intensive is the loaded module dnsrslvr.dll?
Comparison based on the average resource utilization across all programs.
          0.00030996% CPU25.8%
Average thread CPU utilization across all loaded modules is 0.00120%.
Typical file (disk image) location:
C:\Windows\System32\dnsrslvr.dll

Are there other versions of DNS Caching Resolver Service?

What else is related?

What Windows OS versions does this run on?

Windows 8 (6.2.9200.0)
Windows 8 Pro (6.2.9200.0)
Windows 8 Pro with Media Center (6.2.9200.0)

About Microsoft Corporation

Microsoft, founded in 1975 by Bill Gates and Paul Allen, is a veteran software company, best known for its Microsoft Windows operating system and the Microsoft More...
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File details

File name: dnsrslvr.dll
Publisher: Microsoft Corporation (verified)
Name: DNS Caching Resolver Service
Description: Microsoft® Windows® Operating System
Version: 6.2.9200.16384 (win8_rtm.120725-1247)
Product version: 6.2.9200.16384
Size: 157 KB
Original file name: dnsrslvr.dll.mui
Windows file protection: Yes

Resource utilization

Total CPU: 0.0003099562%
Privileged CPU: 0.0002313722%
User CPU: 0.0000785840%
CPU Cycle count /sec: 7,434
Module memory size: 172 KB

Hosted service details

Name: 54a47f6b5e09a77e61649109c6a08866
Command: Dnscache

Image hashes

MD5: 1626a054ae163343b80c8eeca51fdb26
SHA-1: b813c5b02b02e589499ce5f92a2506c0aefe8d94
SHA-256: 26426e6bf91b1877e10f1a5b58c3b1cf244e3cfdfd4c3a0f379141db1796e266

PE image details

CLR assembly: Yes
CLR NGENed: No
Subsystem: Windows GUI
Langauge*: Microsoft Visual C# / Basic .NET
File packed: No
Import Table
advapi32.dll
api-ms-win-core-crt-l1-1-0.dll
api-ms-win-core-crt-l2-1-0.dll
api-ms-win-core-debug-l1-1-0.dll
api-ms-win-core-debug-l1-1-1.dll
api-ms-win-core-delayload-l1-1-0.dll
api-ms-win-core-delayload-l1-1-1.dll
api-ms-win-core-errorhandling-l1-1-0.dll
api-ms-win-core-errorhandling-l1-1-1.dll
api-ms-win-core-file-l1-1-0.dll
api-ms-win-core-file-l1-2-0.dll
api-ms-win-core-handle-l1-1-0.dll
api-ms-win-core-heap-l1-1-0.dll
api-ms-win-core-heap-l1-2-0.dll
api-ms-win-core-heap-obsolete-l1-1-0.dll
api-ms-win-core-interlocked-l1-1-0.dll
api-ms-win-core-interlocked-l1-2-0.dll
api-ms-win-core-libraryloader-l1-1-0.dll
api-ms-win-core-libraryloader-l1-1-1.dll
api-ms-win-core-localization-l1-1-0.dll
api-ms-win-core-localization-l1-2-0.dll
api-ms-win-core-localregistry-l1-1-0.dll
api-ms-win-core-misc-l1-1-0.dll
api-ms-win-core-processenvironment-l1-1-0.dll
api-ms-win-core-processenvironment-l1-2-0.dll
api-ms-win-core-processthreads-l1-1-0.dll
api-ms-win-core-processthreads-l1-1-1.dll
api-ms-win-core-profile-l1-1-0.dll
api-ms-win-core-registry-l1-1-0.dll
api-ms-win-core-string-l1-1-0.dll
api-ms-win-core-synch-l1-1-0.dll
api-ms-win-core-synch-l1-2-0.dll
api-ms-win-core-sysinfo-l1-1-0.dll
api-ms-win-core-sysinfo-l1-2-0.dll
api-ms-win-core-threadpool-l1-1-0.dll
api-ms-win-core-threadpool-legacy-l1-1-0.dll
api-ms-win-core-timezone-l1-1-0.dll
api-ms-win-core-util-l1-1-0.dll
api-ms-win-security-base-l1-1-0.dll
api-ms-win-security-base-l1-2-0.dll
api-ms-win-security-sddl-l1-1-0.dll
api-ms-win-service-core-l1-1-0.dll
api-ms-win-service-core-l1-1-1.dll
dhcpcsvc.dll
dhcpcsvc6.dll
dnsapi.dll
iphlpapi.dll
kernel32.dll
kernelbase.dll
msvcrt.dll
nsi.dll
ntdll.dll
rpcrt4.dll
winnsi.dll
ws2_32.dll
Export Table
loadgpextension
reg_doregisteradapter
servicemain
svchostpushserviceglobals
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