Should I block it?

No, this file is 100% safe to run.

VersionsAdditional versions

6.3.9600.16384 (winblue_rtm.130821-1623) 0.85%
6.3.9600.16384 (winblue_rtm.130821-1623) 0.05%
6.3.9600.16384 (winblue_rtm.130821-1623) 0.65%
6.3.9600.16384 (winblue_rtm.130821-1623) 0.05%
6.3.9600.16384 (winblue_rtm.130821-1623) 2.35%
6.3.9431.0 (winmain_bluemp.130615-1214) 0.15%
6.3.9431.0 (winmain_bluemp.130615-1214) 0.05%
6.2.9200.16384 (win8_rtm.120725-1247) 0.85%
6.2.9200.16384 (win8_rtm.120725-1247) 0.70%
6.2.9200.16384 (win8_rtm.120725-1247) 1.70%
6.2.9200.16384 (win8_rtm.120725-1247) 11.69%
6.2.8400.0 (winmain_win8rc.120518-1423) 0.10%
6.2.8400.0 (winmain_win8rc.120518-1423) 0.10%
6.2.8250.0 (winmain_win8beta.120217-1520) 0.05%
6.2.8102.0 (winmain_win8m3.110823-1455) 0.10%
6.1.7600.16385 (win7_rtm.090713-1255) 30.28%
6.1.7600.16385 (win7_rtm.090713-1255) 2.95%
6.1.7600.16385 (win7_rtm.090713-1255) 1.30%
6.1.7600.16385 (win7_rtm.090713-1255) 2.50%
6.1.7600.16385 (win7_rtm.090713-1255) 3.35%
6.1.7600.16385 (win7_rtm.090713-1255) 15.39%
6.1.7600.16385 (win7_rtm.090713-1255) 2.30%
6.1.7600.16385 (win7_rtm.090713-1255) 0.80%
6.1.7600.16385 (win7_rtm.090713-1255) 0.05%
6.0.6000.16386 (vista_rtm.061101-2205) 1.15%
View more

dnsrslvr.dll

DNS Caching Resolver Service by Microsoft

Remove dnsrslvr.dll
Version:   6.3.9600.16384 (winblue_rtm.130821-1623)
MD5:   fbd2d7f491f3ebc5c54c5c4db2564953
SHA1:   b6aba298d0e11f1c45171fdcd8199eab9283c6bb
This is a Windows system installed file with Windows File Protection (WFP) enabled.

What is dnsrslvr.dll?

The caching resolver reduces DNS network traffic and speeds name resolution by providing a local cache for DNS queries.

About 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\

DetailsDetails

File name:dnsrslvr.dll
Publisher:Microsoft Corporation
Product name:DNS Caching Resolver Service
Description:Microsoft® Windows® Operating System
Typical file path:C:\Windows\System32\dnsrslvr.dll
Original name:dnsrslvr.dll.mui
File version:6.3.9600.16384 (winblue_rtm.130821-1623)
Product version:6.3.9600.16384
Size:249.5 KB (255,488 bytes)
Build date:8/22/2013 6:05 AM
Digital DNA
PE subsystem:Windows GUI
File packed:No
Code language:Microsoft Visual C# / Basic .NET
.NET CLR:Yes
.NET NGENed:No
More details

BehaviorsBehaviors

Hosted services
Runs as a shared service under the Windows svcHost
  • Shared name is 'Dnscache'
  • Shared name is 'Dnscache'
  • Shared name is 'Dnscache'
  • Shared name is 'Dnscache'
  • Shared name is 'Dnscache'
  • Shared name is 'Dnscache'
  • Shared name is 'Dnscache'
  • Shared name is 'Dnscache'
  • Shared name is 'Dnscache'
  • Shared name is 'Dnscache'
  • Shared name is 'Dnscache'
  • Shared name is 'Dnscache'
  • Shared name is 'Dnscache'
  • Shared name is 'Dnscache'
  • Shared name is 'Dnscache'
  • Shared name is 'Dnscache'
  • Shared name is 'Dnscache'
  • Shared name is 'Dnscache'
  • Shared name is 'Dnscache'
  • Shared name is 'Dnscache'
  • Shared name is 'Dnscache'
  • Shared name is 'Dnscache'

Windows OS versionsDistribution by Windows OS

OS versiondistribution
Windows 7 Home Premium 52.50%
Windows 7 Ultimate 29.00%
Windows 7 Professional 10.50%
Windows 7 Home Basic 3.00%
Windows 7 Starter 1.50%
Windows 8 Pro 1.00%
Windows Vista Home Premium 0.50%
Windows 7 Enterprise 0.50%
Windows Se7en Titan 0.50%
Windows 8 Pro with Media Center 0.50%
Windows Vista Business 0.50%

Distribution by countryDistribution by country

United States installs about 40.40% of DNS Caching Resolver Service.

OEM distributionDistribution by PC manufacturer

PC Manufacturerdistribution
Dell 24.06%
ASUS 15.04%
Hewlett-Packard 14.29%
Acer 13.53%
Toshiba 11.28%
Sony 4.51%
Lenovo 4.51%
Samsung 2.26%
GIGABYTE 2.26%
Intel 2.26%
MSI 1.50%
Alienware 1.13%
Medion 0.75%
Gateway 0.75%
NEC 0.75%
Compaq 0.75%
Sahara 0.38%
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