DNS Client (Dnscache) Service Defaults in Windows 10
The DNS Client service (dnscache) caches Domain Name System (DNS) names and registers the full computer name for your computer. If the service is stopped, DNS names will continue to be resolved. However, the results of DNS name queries will not be cached and the computer's name will not be registered. If the service is disabled, any services that explicitly depend on it will fail to start.
Default Settings
| Startup type: | Automatic |
| Display name: | DNS Client |
| Service name: | Dnscache |
| Service type: | share |
| Error control: | normal |
| Group: | TDI |
| Object: | NT AUTHORITY\NetworkService |
| Path: | %SystemRoot%\system32\svchost.exe -k NetworkService -p |
| File: | %SystemRoot%\System32\dnsrslvr.dll |
| Registry key: | HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Dnscache |
| Privileges: |
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Default Behavior
DNS Client is a Win32 service. In Windows 10 it is starting automatically when the operating system starts. Then the DNS Client service is running as NT AUTHORITY\NetworkService in a shared process of svchost.exe along with other services. If DNS Client fails to start, the failure details are being recorded into Event Log. Then Windows 10 will start up and notify the user that the Dnscache service has failed to start due to the error.
Dependencies
DNS Client cannot be started under any conditions, if the following services are disabled, deleted or working improperly:
- Ancillary Function Driver for Winsock
- NetIO Legacy TDI Support Driver
- Network Store Interface Service
While DNS Client is stopped, disabled or working incorrectly, the following services do not start:
Restore Default Startup Configuration of DNS Client
Before you begin doing this, make sure that all the services on which DNS Client depends are configured by default and function properly. See the list of dependencies above.1. Run the Command Prompt as an administrator.
2. Copy the commands below, paste them into the command window and press ENTER:
sc config Dnscache start= auto
sc start Dnscache
3. Close the command window and restart the computer.
The Dnscache service is using the dnsrslvr.dll file that is located in the C:\Windows\System32 directory. If the file is removed or corrupted, read this article to restore its original version from Windows 10 installation media.