What is WUDFRd?

WUDFRd.sys is a Windows driver. A driver is a small software program that allows your computer to communicate with hardware or connected devices. This means that a driver has direct access to the internals of the operating system, hardware etc. The free file information forum can help you determine if WUDFRd.sys is a Windows system file or if it belongs to an application that you can trust.

Run a free scan to check for WUDFRd drivers in need of updating

WUDFRd.sys file information

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

Description: The original WUDFRd.sys is an important part of Windows and rarely causes problems. WUDFRd.sys is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 83,328 bytes (37% of all occurrences), 132,224 bytes, 82,944 bytes or 82,560 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The program is not visible. It is a trustworthy file from Microsoft. There is no detailed description of this service. Therefore the technical security rating is 1% dangerous, however you should also read the user reviews.

Recommended: Identify WUDFRd.sys related errors

Important: Some malware disguises itself as WUDFRd.sys, particularly when not located in the C:\Windows\System32\drivers folder. Therefore, you should check the WUDFRd.sys 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

I am not able to connect to Internet as it is showinf that cannot enumerate WEDFRD key values in registry
digital signiture
UMDF User-mode drivers that use the Windows SideShow class extension return errors when you process commands asynchronously
  ROH   (further information)
Wuffrd.sys was mentioned (as cause?) in a blue screen dump when updating windows 7 premium on an acer aspire M5820
  Klaas Eldering  
cada vez que ejecuto analisis de security essential se detiene en ese controlador y no avanza mas, asi como tambien en el safety scanner, entonces como se si es un virus?
WUDFRd.sys may or may not appear under Performance Information and Tools Advanced Tools Performance issues Drivers are Interfering With Windows Resuming from sleep mode. It shows up under the event log as... Device Friendly Name: Cruzer Glide it also appears multiple times under the log.

Rating chart

Summary: Average user rating of WUDFRd.sys: based on 6 votes with 6 user comments. 3 users think WUDFRd.sys is essential for Windows or an installed application. One user thinks it's probably harmless. 2 users suspect danger. One user is not sure about it.

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Best practices for resolving WUDFRd issues

A clean and tidy computer is the key requirement for avoiding problems with WUDFRd. 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 WUDFRd.sys 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

WUDFRd.sys [all]