What to try when UMDF does not show up in Windows Service

SC2 2018-08-22

2024-04-29

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Since UMDF was not listed in the service of old Windows 7 PC for verification, I gave up because it was old, but I found a way to list it, so I shared the steps I performed.

UMDF is a technology that provides a device driver environment separated from the Windows kernel.

In the environment where UMDF is installed, selecting the user mode driver increases the system stability.

* Please read the postscript about UMDF.

The service name of UMDF is “wudfsvc”.

Specifically:

Service overview
Service name	wudfsvc
Display name	Windows Driver Foundation-User-mode Driver Framework
Explanation	Create and manage user mode driver processes. This service cannot be stopped.
Executable file path	C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted
Startup type	manual
Service status	Stop
Start parameter	-
screenshot

UMDF was already installed

From the conclusion,

UMDF was already installed on my PC, but for some reason it was not displayed in the list of Windows services.

The UMDF 1.1 update program is distributed as a Windows Update update program [KB2685813], so you can check the installation status from the program and functions.

How to confirm KB2685813

Windows> Control Panel> Programs and Features> View Installed Updates> Search: KB2685813

How to display UMDF

Outline of procedure

Download KB2685813 from the official website
Run the installer (-.msu)
Start the Windows service
Confirm that UMDF is displayed
End of procedure

Because UMDF has already been installed, the message "Update for Windows (KB2685813) is already installed on this computer" appears during the installation, so the installation is interrupted.

The installer process until the message "Update for Windows (KB2685813) is already installed on this computer" will be displayed in the service list.

1. Download KB2685813

Download User Mode Driver Framework v1.11 (KB2685813) from Microsoft official site.

There are 32bit /64bit versions so don't make a mistake.

Umdf-1.11-Win-6.1-x86.msu (32-bit)
Umdf-1.11-Win-6.1-x64.msu (64-bit)

Download User-Mode Driver Framework version 1.11 update for Windows 7, and Windows Server 2008 R2 from Official Microsoft Download Center

2.Run Umdf-1.11-Win-6.1-x86.msu

The Windows Update stand-alone installer will start up and will display "Searching for updates on this computer ...". Wait one or two minutes.

The message "Update for Windows (KB2685813) is already installed on this computer" will appear. Click "OK".

3. End of procedure

Start the Windows service and check that UMDF is displayed.

Windows Driver Foundation-User-mode Driver Framework

Afterword

In an environment where UMDF is operating, user mode drivers can be applied to the hardware.

Since the user mode driver operates separately from the kernel, which is the core part of the Windows OS, the Windows OS will not be involved if the user mode driver crashes.

On the other hand, a crash in the kernel mode driver affects the operation of the OS and the stability of other systems.

UMDF is installed on Windows that regularly applies Microsoft feature updates.

In this case, UMDF was not displayed in the Windows service, but UMDF was working.

The User Mode Driver Framework (UMDF) provides a unified model that can be used with different device classes. This integrates device installation and management with standard operating system features such as Plug and Play (PnP) and power management.

UMDF was created to support protocol device classes such as cameras and portable music players. By moving the drivers for those devices to user mode, you can simplify the drivers and improve the overall stability of the operating system.
Introducing UMDF | Microsoft Docs

External link

Verification: Windows 7 Home 32-bit

：SC2