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 -p
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 of Network Connection Broker

Before you begin doing this, make sure that all the services on which Network Connection Broker 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 command below, paste it into the command window and press ENTER:

sc config NcbService start= demand

3. Close the command window and restart the computer.

The NcbService service is using the ncbservice.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.