RPC Endpoint Mapper (RpcEptMapper) Service Defaults in Windows 7

Resolves RPC interfaces identifiers to transport endpoints. If this service is stopped or disabled, programs using Remote Procedure Call (RPC) services will not function properly.

Default Settings

Startup type: Automatic
Display name:RPC Endpoint Mapper
Service name:RpcEptMapper
Service type:share
Error control:normal
Group:COM Infrastructure
Object:NT AUTHORITY\NetworkService
Path:%SystemRoot%\system32\svchost.exe -k RPCSS
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\RpcEptMapper
  • SeChangeNotifyPrivilege
  • SeImpersonatePrivilege
  • SeCreateGlobalPrivilege

Default Behavior

RPC Endpoint Mapper is a Win32 service. In Windows 7 it is starting automatically on the operating system startup. Then the RPC Endpoint Mapper service is running as NT AUTHORITY\NetworkService in a shared process of svchost.exe. Other system components, such as drivers and services, may run in the same process. If RPC Endpoint Mapper fails to start, Windows 7 attempts to write the failure details into Event Log. Then Windows 7 startup should proceed and the user should be notified that the RpcEptMapper service is not running because of the error.


If RPC Endpoint Mapper is stopped, the Remote Procedure Call (RPC) service fails to start and initialize.

Restore Default Startup Configuration of RPC Endpoint Mapper

1. Run the Command Prompt as an administrator.

2. Copy the commands below, paste them into the command window and press ENTER:

sc config RpcEptMapper start= auto
sc start RpcEptMapper

3. Close the command window and restart the computer.

The RpcEptMapper service is using the RpcEpMap.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 7 installation media.