Should I block it?

No, this file is 100% safe to run.

VersionsAdditional versions

6.3.9600.16384 (winblue_rtm.130821-1623) 0.82%
6.3.9600.16384 (winblue_rtm.130821-1623) 0.05%
6.3.9600.16384 (winblue_rtm.130821-1623) 0.63%
6.3.9600.16384 (winblue_rtm.130821-1623) 0.05%
6.3.9600.16384 (winblue_rtm.130821-1623) 2.27%
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) 0.82%
6.2.9200.16384 (win8_rtm.120725-1247) 0.68%
6.2.9200.16384 (win8_rtm.120725-1247) 1.65%
6.2.9200.16384 (win8_rtm.120725-1247) 11.33%
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) 29.33%
6.1.7600.16385 (win7_rtm.090713-1255) 2.86%
6.1.7600.16385 (win7_rtm.090713-1255) 1.26%
6.1.7600.16385 (win7_rtm.090713-1255) 2.42%
6.1.7600.16385 (win7_rtm.090713-1255) 3.24%
6.1.7600.16385 (win7_rtm.090713-1255) 14.91%
6.1.7600.16385 (win7_rtm.090713-1255) 2.23%
6.1.7600.16385 (win7_rtm.090713-1255) 0.77%
6.1.7600.16385 (win7_rtm.090713-1255) 0.05%
6.1.7600.16385 (win7_rtm.090713-1255) 0.19%
View more

dnsrslvr.dll

DNS Caching Resolver Service by Microsoft

Remove dnsrslvr.dll
Version:   6.1.7600.16385 (win7_rtm.090713-1255)
MD5:   16835866aaa693c7d7fceba8fff706e4
SHA1:   0bb206549e11d9ef51b59eca2dd462f46e7c0b18
SHA256:   15891558f7c1f2bb57a98769601d447ed0d952354a8bb347312d034dc03e0242
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:6.1.7600.16385 (win7_rtm.090713-1255)
Product version:6.1.7600.16385
Size:179 KB (183,296 bytes)
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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