Windows Push Notifications User Service (WpnUserService) Defaults in Windows 10

This service hosts Windows notification platform which provides support for local and push notifications. Supported notifications are tile, toast and raw.

Default Settings

Startup type:
Windows 10 Home 1507N/A
Windows 10 Pro 1507N/A
Windows 10 Education 1507N/A
Windows 10 Enterprise 1507N/A
Windows 10 Home 1511N/A
Windows 10 Pro 1511N/A
Windows 10 Education 1511N/A
Windows 10 Enterprise 1511N/A
Windows 10 Home 1607Manual
Windows 10 Pro 1607Manual
Windows 10 Education 1607Manual
Windows 10 Enterprise 1607Manual
Windows 10 Home 1703Automatic
Windows 10 Pro 1703Automatic
Windows 10 Education 1703Automatic
Windows 10 Enterprise 1703Automatic
Windows 10 Home 1709Automatic
Windows 10 Pro 1709Automatic
Windows 10 Education 1709Automatic
Windows 10 Enterprise 1709Automatic
Display name:Windows Push Notifications User Service
Service name:WpnUserService
Service type:user share process template
Error control:ignore
Object:LocalSystem
Path:%SystemRoot%\system32\svchost.exe -k UnistackSvcGroup
File:%SystemRoot%\System32\WpnUserService.dll
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WpnUserService
Privileges:
  • SeImpersonatePrivilege
  • SeCreateGlobalPrivilege

Default Behavior

It is starting only if the user, an application or another service starts it in Windows 10 Home 1607, Windows 10 Pro 1607, Windows 10 Education 1607, Windows 10 Enterprise 1607. This service is starting automatically when the operating system starts in Windows 10 Home 1703, Windows 10 Pro 1703, Windows 10 Education 1703, Windows 10 Enterprise 1703, Windows 10 Home 1709, Windows 10 Pro 1709, Windows 10 Education 1709, Windows 10 Enterprise 1709. If Windows Push Notifications User Service fails to load or initialize, Windows 10 start up proceeds without warnings. However the error details are being logged.

Restore Default Startup Configuration for Windows Push Notifications User Service

1. Run the Command Prompt as an administrator.

2. Depending on the version of your operating system, copy the commands below, paste them into the command window and press ENTER.

For Windows 10 1607 Home, Windows 10 1607 Pro, Windows 10 1607 Education, Windows 10 1607 Enterprise:
sc config WpnUserService start= demand

For Windows 10 1703 Home, Windows 10 1703 Pro, Windows 10 1703 Education, Windows 10 1703 Enterprise, Windows 10 1709 Home, Windows 10 1709 Pro, Windows 10 1709 Education, Windows 10 1709 Enterprise:
sc config WpnUserService start= auto
sc start WpnUserService

3. Close the command window and restart the computer.

The WpnUserService service is using the WpnUserService.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.