What is wudfhost.exe?

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the wudfhost.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

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Wudfhost.exe file information

Windows Task Manager with wudfhost
Wudfhost.exe process in Windows Task Manager

The process known as Windows Driver Foundation - User-mode Driver Framework Host Process belongs to software Microsoft Windows Operating System by Microsoft (

Description: The original wudfhost.exe is an important part of Windows and rarely causes problems. Wudfhost.exe is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 142,336 bytes (21% of all occurrences), 146,432 bytes and 8 more variants. 
The program is not visible. Wudfhost.exe is a trustworthy file from Microsoft. Therefore the technical security rating is 13% dangerous; however you should also read the user reviews.

Recommended: Identify wudfhost.exe related errors

If wudfhost.exe is located in a subfolder of C:\Windows, the security rating is 33% dangerous. The file size is 229,888 bytes (50% of all occurrences) or 264,192 bytes. The program is not visible. It is not a Windows system file.

Important: Some malware disguises itself as wudfhost.exe, particularly when not located in the C:\Windows\System32 folder. Therefore, you should check the wudfhost.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

Using Win8.1. Running windows media player while an external hard drive is connected can make this use up a ton of CPU (25%, or all of 1 of my 4 cores). Shutting down Windows Media Player immediately dropped it's cpu usage down to nothing. I assume it's just microsoft indexing all your drives without your permission as usual.
It is used in Win 10 for handheld devices (Mobile phones) in managed Windows Apps from Microsoft Store. Media file, MS Outlook and MS Office. I suggest to continue to monitor.
  DONG Eric  
I get this whenever I connect a Sony Xperia M2 Smartphone. I am running Windows XP + SP3.
I agree with the fact that this program is harmless. I does use a huge amount of CPU processing time at start up, but this should subside in about 2 to 3 min. I'm running an i5 Gaming system with 16 Gigs of memory, and all my CPU cores lit up for about 2 min, it's back to normal now only using about 1 to 0.5 % of CPU usage. I don't recommend deleting or stopping this process.
  Christopher John  
Memory hogger
Shows up when I plug in USB devices, such as cellular phones.
C:\Program Files (x86)\Common Files\Windows Driver Foundation\WUDFHost.exe and cvtres.exe -a scrypt - bitcoin miner - Hiding use Process Explorer - Remove using HitmanPro and malwarebytes
  Somebody   (further information)
This is a host service for Charging my Daughters Android Cell Phone.
More comments can be found here:
    (further information)

Rating chart

Summary: Average user rating of wudfhost.exe: based on 150 votes with 9 reviews. 96 users think wudfhost.exe is essential for Windows or an installed application. 14 users think it's probably harmless. 21 users think it's neither essential nor dangerous. 7 users suspect danger. 12 users think wudfhost.exe is dangerous and recommend removing it. 30 users don't grade wudfhost.exe ("not sure about it").

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Best practices for resolving wudfhost issues

A clean and tidy computer is the key requirement for avoiding problems with wudfhost. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the 6resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the wudfhost.exe process on your computer, the following programs have proven to be helpful: ASecurity Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

wudfhost.exe [all]