What is WerFault.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 WerFault.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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WerFault.exe file information

Windows Task Manager with WerFault
WerFault.exe process in Windows Task Manager

The process known as Windows Problem Reporting belongs to software Microsoft Windows Operating System by Microsoft (

Description: WerFault.exe is an important part of Windows, but often causes problems. The file WerFault.exe is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 360,448 bytes (71% of all occurrences), 262,496 bytes and 7 more variants. 
It is a Windows core system file. It is a trustworthy file from Microsoft. The program is not visible. WerFault.exe is able to monitor applications. Therefore the technical security rating is 2% dangerous; however you should also read the user reviews.

Uninstalling this variant: If you are having problems with WerFault.exe, you can also do the following:
  1) safely remove the program using the uninstall program of Microsoft Windows (Control Panel ⇒ Uninstall a Program)
  2) turn to the software developer, Microsoft, for advice.

Recommended: Identify WerFault.exe related errors

If WerFault.exe is located in a subfolder of C:\Windows, the security rating is 0% dangerous. The file size is 360,448 bytes (81% of all occurrences), 413,136 bytes, 262,496 bytes, 385,768 bytes or 217,088 bytes. The file is a Windows system file. It is a Microsoft signed file. WerFault.exe is able to monitor applications.

Uninstalling this variant: If you are having problems with WerFault.exe, you can also do the following:
  1) safely remove the program using the uninstall program of Microsoft Windows (Control Panel ⇒ Uninstall a Program)
  2) consult's Customer Service for advice.

Important: Some malware camouflages itself as WerFault.exe, for example Virus:Win32/Virut.BN (detected by Microsoft), and Virus.Win32.Virut.ce (detected by Kaspersky). Therefore, you should check the WerFault.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

The Werfault.exe process is a part of Windows Error Reporting in Windows Vista. This feature allows Microsoft to monitor and solve problems in the Vista operating system, features and applications, and enables users to send error data and receive updates and solutions.
  Lera   (further information)
It activates very briefly and dies after one registerable game does not run
I have windows 7 but it is still active there
this file lets me do anything. I cant download, cant install etc
  Karin Weller  
WerFault.exe sends problem reports to Microsoft so that it can check for a solution to the problem and download it if available.
I have 8 WerFault.ext processes according to Task Manager...
  Laszlo Gombos  

Rating chart

Summary: Average user rating of WerFault.exe: based on 18 votes with 6 user comments. 5 users think WerFault.exe is essential for Windows or an installed application. 4 users think it's probably harmless. 4 users think it's neither essential nor dangerous. 4 users suspect danger. One user thinks WerFault.exe is dangerous and recommends removing it. One user is not sure about it.

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Best practices for resolving WerFault issues

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

WerFault.exe [all]