Network Connection Broker (NcbService) Service Defaults in Windows 10

Brokers connections that allow Windows Store Apps to receive notifications from the internet.

Default Settings

Startup type:Manual
Display name:Network Connection Broker
Service name:NcbService
Service type:share
Error control:normal
Path:%SystemRoot%\System32\svchost.exe -k LocalSystemNetworkRestricted
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\NcbService
  • SeCreateGlobalPrivilege
  • SeImpersonatePrivilege
  • SeDebugPrivilege

Default Behavior

Network Connection Broker is a Win32 service. In Windows 10 it is starting only if the user, an application or another service starts it. When the Network Connection Broker service is started, it is running as LocalSystem in a shared process of svchost.exe along with other services. If Network Connection Broker fails to start, the failure details are being recorded into Event Log. Then Windows 10 will start up and notify the user that the NcbService service has failed to start due to the error.


Network Connection Broker cannot be started under any conditions, if the following services are disabled, deleted or working improperly:

While Network Connection Broker is stopped, disabled or working incorrectly, the Connected Devices Platform Service cannot be launched.

Restore Default Startup Configuration for Network Connection Broker

1. Select your Windows 10 edition and release, and then click Download.

2. Save the Win10_NcbService_Service_Startup.cmd file to a local storage device.

3. Run the saved file as an administrator.

4. Restart the computer.

The NcbService service is using the ncbservice.dll file that is located in the %WinDir%\System32 folder. If the file is changed, damaged or deleted, you can restore its original version from Windows 10 installation media.