The Windows Club

TheWindowsClub covers authentic Windows 11, Windows 10 tips, tutorials, how-to's, features, freeware. Created by Anand Khanse, MVP.

Fix WpnUserService.dll Error on Windows 11

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WpnUserService.dll is a Dynamic Linked Library connected with Windows Push Notification User Service. It makes sure any notification that is sent by Windows or any other app works properly. If the service fails or DLL gets corrupt, Windows users will miss all kinds of notifications. This post will share solutions to help you resolve the WpnUserService.dll Error on Windows 11/10.

Fix WpnUserService dll Error on Windows PC

Fix WpnUserService.dll error on Windows 11/10

The DLL is located at  C:\Windows\System32\, which can be accessed using an Administrator account. Some of the errors related to the DLL are Access Violation at address, WpnUserService.dll is missing or corrupt, the application failed to start, and others.

  1. Restart WPNU service
  2. Run SFC & DISM Tools
  3. Uninstall Recently Installed Software

You will need admin permission to resolve this problem.

1] Restart WPNU service

WPN Services Restart

  • Open Run prompt (Win + R), type Services.msc, and press the Enter key
  • Once the Services Snap-in and locate WPNService
  • Double-click to open it, and then ensure it starts if it is not already running.
  • If it is already running, make sure to Restart it.

The Startup type for Windows Push Notification User Service should be set to Automatic.

2] Run SFC & DISM Tools

SFC Checker

System File Checker and DISM tools are useful when a file is missing or corrupt and needs a replacement.

  • Open Windows Terminal (Administrator) using Win + X
  • Type SFC /scannow and press the Enter key
  • If there is no error found, you can then execute the command  dism /online /cleanup-image /restorehealth

DISM Scan PowerShell

Once the commands are complete, anything that needs a replacement will be fixed.

3] Uninstall Recently Installed Software

If the problem started after you had recently installed software, then you should uninstall and check. Some software offers customization that can change the way notifications appear. Avast is well known to interfere with interfering Push Notification.

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I hope the post was easy to follow, and you have fixed WpnUserService.dll Error on Windows.

What is a DLL?

DLL stands for Dynamic Linked Library, which can be connected to a program and reused by other services if allowed.  If a DLL gets corrupted or missing, then multiple programs can fail. The good thing is that most of the System DLLs can be fixed by replacing them with a new copy using the SFC and DISM commands.

How Do I Turn off Windows Push Notifications?

  • Go to Windows Settings > System > Notifications
  • Toggle off the Notifications to completely turn off all of them
  • If you need to minimize notifications, you can choose to turn them off for individual apps.

All the best.

AnandK@TWC

Anand Khanse is the Admin of TheWindowsClub.com, a 10-year Microsoft MVP (2006-16) & a Windows Insider MVP (2016-2022). Please read the entire post & the comments first, create a System Restore Point before making any changes to your system & be careful about any 3rd-party offers while installing freeware.