DNS Client (Dnscache) Service Defaults in Windows 8

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
File:%SystemRoot%\System32\dnsrslvr.dll
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Dnscache
Privileges:
  • SeChangeNotifyPrivilege
  • SeCreateGlobalPrivilege

Default Behavior

DNS Client is a Win32 service. In Windows 8 it is starting automatically during the operating system startup. Then the DNS Client service runs as NT AUTHORITY\NetworkService in a process of svchost.exe, sharing it with other services. If DNS Client fails to start, the error details are added to Windows 8 error log. When the operating system startup is complete, the user is being notified that the Dnscache service hasn't been started.

Dependencies

DNS Client can't start, if any service from the list below is disabled or not available:

If DNS Client is disabled, the Network Connectivity Assistant service will not be started and initialized.

Restore Default Startup Configuration for 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 %WinDir%\System32 folder. If the file is corrupted or deleted, you can put it back in there.