启动Windows PC 并不像看起来那么简单 - 数百个服务和系统进程开始运行以加载您将看到和使用的基本组件，从您的桌面环境到您的网络连接。Windows需要许多关键系统进程，如csrss.exe才能执行此操作。
一个鲜为人知但必不可少的系统进程是 wudfhost.exe，它是一个关键组件，可帮助您的 Windows PC 加载设备驱动程序，从而使您的应用程序和服务能够控制您的硬件并与之交互。如果您想了解更多关于 wudfhost.exe 以及如何对其进行故障排除的信息，本指南将为您提供帮助。
什么是 Windows 10 上的 Wudfhost.exe？(What Is Wudfhost.exe on Windows 10?)
wudfhost.exe进程(wudfhost.exe )（或者，它的全名是Windows 用户模式驱动程序框架主机(Windows User-Mode Driver Framework Host )进程）是 Windows PC 上运行的最重要的系统进程之一。
它作为许多库和组件的一部分运行，这些库和组件构成了Windows 硬件驱动程序与低级硬件组件（包括图形卡、系统内存和CPU ）接口的必要结构。它可以安全地访问这些组件，而不会危及您的系统安全。
它还为Windows提供了与便携式设备交互的能力，例如键盘或网络摄像头等(webcam)USB设备。Wudfhost.exe 本身使用低权限、非管理访问权限加载其中一些驱动程序，从而允许Windows和第三方应用程序和服务安全访问这些硬件组件。
如果没有 wudfhost.exe，您的 PC 驱动程序将无法工作。没有驱动程序，没有硬件访问权限。没有硬件访问，没有工作的PC。仅出于这个原因，wudfhost.exe 对您的 Windows PC 的工作至关重要。如果它意外停止，您的 PC 可能会崩溃，导致蓝屏(Blue Screen)死机(Death)错误，例如停止代码关键进程死亡 BSOD(stop code critical process died BSOD)。
Wudfhost.exe 安全吗？(Is Wudfhost.exe Safe?)
作为一个必不可少的Windows进程，正版 wudfhost.exe 进程是完全可以安全运行的。任何试图“劫持”它或让另一个进程取代它的尝试都是不可能的。毕竟，像 wudfhost.exe 这样的进程是您 PC 的基本操作所必需的，并且通常受到Windows本身的良好保护。
然而，这并不意味着不可能。例如，如果 wudfhost.exe 进程损坏或感染了恶意软件，则可能会出现(infected with malware)内核安全检查失败 BSOD(kernel security check failure BSOD)。你通常可以使用Microsoft Defender或其他第三方防病毒或反恶意软件解决方案来检查这一点。
如果您想绝对确定 wudfhost.exe 进程可以安全运行（并且您已经扫描了您的 PC 是否存在恶意软件），您可以使用(scanned your PC for malware)任务管理器(Task Manager)检查该进程是否为正版，使用以下步骤之一下面的部分。
停止或禁用 Wudfhost.exe 进程是否安全？(Is It Safe to Stop or Disable the Wudfhost.exe Process?)
如果您决定在任务管理器(Task Manager)中手动结束 wudfhost.exe 进程，它不会导致蓝屏(Blue Screen)死机(Death)，但可能会导致系统不稳定。这是一个关键的系统进程，因此任何结束该进程的尝试都会阻止 Windows 的驱动程序加载，并可能在任何时候使您的 PC 崩溃。
然而，更有可能的是，Windows将简单地重新加载该进程。您可以停止它，但只能短暂停止。Windows需要 wufhost.exe 来加载驱动程序和与组件的接口，因此虽然您可以在任务管理器(Task Manager)中短暂中断和停止进程，但不能完全禁用它。
需要明确的是，这意味着您不能也绝对不应该尝试长期禁用 wudfhost.exe 进程，因为这会导致Windows崩溃并停止工作。唯一的例外，尽管它可能是罕见的，是如果另一个进程在它不是真正的进程时伪装成这个进程。
某些类型的已知恶意软件确实会尝试伪装成重要进程以在众目睽睽之下运行。这在Windows 10(Windows 10) PC上越来越少见，但不要忽视这种可能性，并使用以下步骤检查是否是这种情况。
如何解决 Wudfhost.exe 高 CPU 和其他系统资源问题(How to Troubleshoot Wudfhost.exe High CPU and Other System Resource Issues)
如果您看到Wudfhost.exe具有高CPU、内存或其他系统资源使用问题，这可能表明您的 PC 存在问题，您需要对其进行故障排除。
Windows 用户模式驱动程序框架主机(Windows User-Mode Driver Framework Host)进程不需要大量资源即可运行。在大多数情况下，它应该只在您连接设备（例如连接到USB端口）或当应用程序或服务访问某些硬件组件时注册资源使用情况。
但是，如果某个应用程序或服务经常或过度访问您的硬件，则可能会导致任务管理器中的(Task Manager)CPU或内存使用率过高。它也可能是由过时或配置错误的硬件驱动程序本身引起的，因为 wudfhost.exe 进程加载驱动程序以将Windows与您的硬件接口。
在对系统进行任何更改之前，请考虑您是否在问题开始之前安装或连接了任何新硬件。如果您这样做了，请移除组件（如果可能）以查看问题是否是由该硬件本身引起的。
如果这不是原因，则需要使用Windows Update和设备制造商网站检查所有设备驱动程序的更新。(check all of your device drivers for updates)您可以借此机会检查新的系统更新，因为这些更新可能附带额外的稳定性修复程序。
如何使用 Windows 更新检查系统和驱动程序更新(How to Check for System and Driver Updates Using Windows Update)
- 要检查可用的Windows系统和驱动程序更新，请右键单击开始(Start)菜单并选择设置(Settings)。
- 在“设置”(Settings )菜单中，选择“更新和安全”(Update & Security ) > “ Windows 更新”(Windows Update)。Windows 应自动扫描可能的系统或驱动程序更新，但如果没有，请选择检查更新(Check for updates)以自动扫描。如果没有自动开始，请选择安装更新以安装任何可用的更新。(Install Updates)
- 允许 Windows(Allow Windows)下载并安装任何必要的更新。该过程完成后，重新启动 PC 以加载新的驱动程序。您可以通过右键单击开始(Start)菜单并选择关闭或注销(Shut down or sign out )>重新启动(Restart)来快速执行此操作。
检查制造商的驱动程序更新(Checking for Driver Updates from the Manufacturer)
并非所有驱动程序更新都可以立即通过Windows Update系统获得。新(New)驱动程序通常在发布几个月后出现，这让微软(Microsoft)有机会在更广泛的发布之前先测试驱动程序的稳定性。
但是，这确实限制了为尖端硬件安装最新驱动程序的能力。例如，如果您安装了全新的显卡(installed a brand-new graphics card)，您可能需要升级驱动程序以支持新游戏并查看稳定性改进。
例如，如果您有NVIDIA显卡，则需要通过访问NVIDIA网站(NVIDIA)更新您的 NVIDIA 驱动程序(update your NVIDIA drivers)，手动下载最新的驱动程序，然后将其安装到您的 PC 上。
这适用于您最近安装的任何硬件，包括连接 USB 的设备，例如网络摄像头、图形输入板等。制造商发布的驱动程序可能与Windows 更新(Windows Update)版本相同，但如果它更新，它可以提供稳定性改进，以防止 wudfhost.exe 高CPU和RAM问题。
检查 Wudfhost.exe 是否合法(Checking Whether Wudfhost.exe Is Legitimate)
虽然这种情况越来越少见，但一些恶意软件会尝试感染（或代替运行）真正的进程，如 wudfhost.exe。如果您在检查恶意软件后想知道正在运行的 wudfhost.exe 进程是否是合法的系统进程，您可以使用(checking for malware)任务管理器(Task Manager)跟踪文件的位置。
- 为此，请通过右键单击开始(Start)菜单（或任务栏）并从上下文菜单中选择任务管理器来打开(Task Manager)任务管理器。(Task Manager)
- 在任务管理器(Task Manager )窗口中，选择详细信息(Details)选项卡并查找列出的wudfhost.exe进程（如果它当前正在运行）。找到它后，右键单击该进程并选择Open file location。
- Windows 将打开文件资源管理器(File Explorer)到正在运行的 wudfhost.exe 进程的位置。您应该在 PC 上的C:\Windows\System32 文件夹中找到该文件。如果它不在此位置，则该文件不是真实的。
如果正在运行的 wudfhost.exe 进程不在System32文件夹中，则有问题，但暂时不要惊慌。如果您无法删除恶意软件(remove the malware)，并且假设您为关键文件准备了系统备份(system backup in place)，则可能需要将 Windows 恢复到较早的位置(restore Windows to an earlier point)以删除恶意软件并让您安全地恢复使用 PC。
如果您没有还原点，并且无法删除恶意软件，则需要考虑擦除并重新安装 Windows(wiping and reinstalling Windows)以确保删除感染。这将允许您再次使用Windows，而不会危及您的文件和安全性。
更好地了解 Windows 操作系统(Understanding the Windows Operating System Better)
如本指南所示，如果您看到Windows 用户模式驱动程序框架主机(Windows User-Mode Driver Framework Host)(wudfhost.exe) 进程正在运行，您无需惊慌。它是Windows(Windows)上最重要的进程之一，仅次于ntosknrl.exe至关重要，如果没有它运行，您的Windows PC 将无法工作。
如果您遇到 wudfhost.exe 或任何其他系统文件的问题，请不要忘记执行一些常见的故障排除步骤。如果遇到困难，您可以快速修复系统文件，或者如果问题更严重，您可能需要考虑(quickly repair your system files)将 Windows 恢复出厂设置(factory reset of Windows)，擦除文件并将其恢复为默认配置。
What is wudfhost.exe and Is It Safe?
Booting up а Windowѕ PC isn’t as simple as it seems—hundreds of services and system processes kick іnto action to load the essential components you’ll see and use, from your desktoр environment to yoυr network connection. A numbеr of critical system proceѕses, like csrss.exe, are required for Windows to be able to do this.
One lesser-known but essential system process is wudfhost.exe, a critical component that helps your Windows PC load the device drivers that allow your apps and services to control and interface with your hardware. If you’re curious to learn more about wudfhost.exe and how to troubleshoot it, this guide will help you.
What Is Wudfhost.exe on Windows 10?
The wudfhost.exe process (or, to give it its full name, the Windows User-Mode Driver Framework Host process) is one of the most important system processes running on your Windows PC.
It operates as part of a number of libraries and components that form the necessary structure for Windows hardware drivers to interface with your low-level hardware components, including your graphics card, system memory, and CPU. It provides access to those components safely without risking your system security.
It also provides the ability for Windows to interface with portable devices, such as USB devices like your keyboard or webcam. Wudfhost.exe itself loads some of these drivers using low privilege, non administrative access, allowing secure access to these hardware components by Windows and third-party apps and services.
Without wudfhost.exe, your PC drivers won’t work. No drivers, no hardware access. No hardware access, no working PC. For this reason alone, wudfhost.exe is critical for your Windows PC to work. If it unexpectedly stops, your PC could crash, causing a Blue Screen of Death error, such as a stop code critical process died BSOD.
Is Wudfhost.exe Safe?
As an essential Windows process, the genuine wudfhost.exe process is completely safe to run. Any attempt to “hijack” it or for another process to replace it is unlikely. After all, processes like wudfhost.exe are needed for the basic operation of your PC and are usually well protected by Windows itself.
That doesn’t mean it isn’t possible, however. For example, a kernel security check failure BSOD may occur if the wudfhost.exe process is corrupted or infected with malware. You can usually check for this using Microsoft Defender or another third-party antivirus or antimalware solution.
If you want to be absolutely sure that the wudfhost.exe process is safe to run (and you’ve already scanned your PC for malware), you can check whether the process is genuine or not using Task Manager, using the steps in one of the sections below.
Is It Safe to Stop or Disable the Wudfhost.exe Process?
If you decide to end the wudfhost.exe process manually in Task Manager, it won’t result in a Blue Screen of Death, but it could cause system instability. This is a critical system process, so any attempts to end the process will prevent Windows’ drivers from loading and could crash your PC at any point.
More likely, however, is that Windows will simply reload the process. You can stop it, but only briefly. Windows needs wufhost.exe to load drivers and interface with components, so while you can briefly interrupt and stop the process in Task Manager, you can’t completely disable it.
To be clear—this means you can’t and absolutely shouldn’t attempt to disable the wudfhost.exe process in the long term, as this will cause Windows to crash and stop working. The only exception, rare as it may be, is if another process is masquerading as this process when it isn’t the genuine process.
Some types of known malware do attempt to masquerade as important processes to run in plain sight. This is increasingly rare on a Windows 10 PC, but don’t discount the possibility, and use the steps below to check if this is the case.
How to Troubleshoot Wudfhost.exe High CPU and Other System Resource Issues
If you’re seeing Wudfhost.exe with high CPU, memory, or other system resource usage issues, it could be a sign of a problem with your PC that you’ll need to troubleshoot.
The Windows User-Mode Driver Framework Host process shouldn’t need a large amount of resources to run. In most cases, it should only register resource usage when you connect a device (eg. to a USB port) or when an app or service accesses certain hardware components.
However, if a certain app or service is accessing your hardware often or excessively, it could result in a high CPU or memory usage spike in Task Manager. It can also be caused by outdated or misconfigured hardware drivers themselves, as the wudfhost.exe process loads drivers to interface Windows with your hardware.
Before you make any changes to your system, consider whether you’ve installed or connected any new hardware just before the issue started. If you did, remove the component (where possible) to see if the issue is caused by that hardware itself.
If this isn’t the cause, you’ll need to check all of your device drivers for updates using Windows Update and the device manufacturer websites. You can take this opportunity to check for new system updates, as these may come with additional stability fixes.
How to Check for System and Driver Updates Using Windows Update
- To check for available Windows system and driver updates, right-click the Start menu and select Settings.
- In the Settings menu, select Update & Security > Windows Update. Windows should automatically scan for possible system or driver updates, but if it doesn’t, select Check for updates to scan automatically. Select Install Updates to install any available updates if it doesn’t begin automatically.
- Allow Windows to download and install any necessary updates. Once the process is complete, restart your PC to load the new drivers. You can quickly do this by right-clicking the Start menu and selecting Shut down or sign out > Restart.
Checking for Driver Updates from the Manufacturer
Not all driver updates are made available through the Windows Update system immediately. New drivers usually appear several months after their release, giving Microsoft the opportunity to test the driver stability first before a wider release.
This does, however, limit the ability to install the latest drivers for cutting edge hardware. For instance, if you’ve installed a brand-new graphics card, you may need to upgrade your drivers to support new games and see stability improvements.
If you have an NVIDIA graphics card, for example, you’ll need to update your NVIDIA drivers by visiting the NVIDIA website, downloading the latest driver manually, and installing it on your PC.
This applies to any recent hardware you’ve installed, including USB-connected devices such as webcams, graphics tablets, and more. The manufacturer-issued driver may be the same as the Windows Update version, but if it’s newer, it could offer stability improvements to prevent wudfhost.exe high CPU and RAM issues.
Checking Whether Wudfhost.exe Is Legitimate
While it’s increasingly rare, some malware will try to infect (or run in place of) genuine processes like wudfhost.exe. If you’re wondering whether the running wudfhost.exe process is the legitimate system process after checking for malware, you can trace the file’s location using Task Manager.
- To do this, open Task Manager by right-clicking the Start menu (or the taskbar) and selecting Task Manager from the context menu.
- In the Task Manager window, select the Details tab and look for the wudfhost.exe process listed (if it’s currently running). Once you find it, right-click the process and select Open file location.
- Windows will open File Explorer to the location of the running wudfhost.exe process. You should find the file in the C:\Windows\System32 folder on your PC. If it isn’t in this location, the file isn’t genuine.
If the running wudfhost.exe process isn’t in the System32 folder, it’s a problem, but don’t panic just yet. If you can’t remove the malware, and assuming you have a system backup in place for your critical files, you may need to restore Windows to an earlier point to remove the malware and allow you to safely resume using your PC.
If you don’t have a restore point, and you can’t remove the malware, you’ll need to consider wiping and reinstalling Windows to ensure the infection is removed. This will allow you to use Windows again without putting your files and security at risk.
Understanding the Windows Operating System Better
As this guide shows, you don’t need to panic if you see the Windows User-Mode Driver Framework Host (wudfhost.exe) process running. It’s one of the most important processes on Windows, ranking next to ntosknrl.exe as critical enough that, without it running, your Windows PC just wouldn’t work.
If you run into issues with wudfhost.exe or any other system files, don’t forget to follow some common troubleshooting steps. You can quickly repair your system files if you run into difficulty or, if the issue is more serious, you may need to think about a factory reset of Windows, wiping your files and restoring it to its default configuration.
