What is winFAH.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 winFAH.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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WinFAH.exe file information

The process known as FAH5.03 belongs to software Folding@Home Client by Stanford University (

Description: WinFAH.exe is not essential for Windows and will often cause problems. WinFAH.exe is located in a subfolder of "C:\Program Files" (normally C:\Program Files\Folding@Home\). The file size on Windows 10/8/7/XP is 323,584 bytes. 
There is an icon for this program on the taskbar next to the clock. The program has a visible window. The winFAH.exe file is not a Windows core file. Therefore the technical security rating is 16% dangerous; however you should also read the user reviews.

Uninstalling this variant: You have the option to uninstall the software Folding using the Uninstall a Program function of Windows Control Panel (Windows: Start, Settings, Control Panel, Uninstall a Program) or contact Customer Service.

Recommended: Identify winFAH.exe related errors

External information from Paul Collins:

Important: Some malware camouflages itself as winFAH.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the winFAH.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

Folding@home console - gene research window
    (further information)
It was installed with some other software without asking me
Part of the protien folding research program - voluntary intallation
It's the Folding@Home program.
  Way   (further information)
Part of Standford's Folding@home program
Folding@home Windows Program
  1f   (further information)
Is the folding@home protein folding project window that allows for a visual display of the protein folding process.
  Blake   (further information)
It is a distributed computing project of Stanford University. NOT MALWARE. Voluntary installation only. "sparkle" is mistaken.
  Basia   (further information)

Rating chart

Summary: Average user rating of winFAH.exe: based on 18 votes with 9 user comments. 8 users think winFAH.exe is essential for Windows or an installed application. 8 users think it's neither essential nor dangerous. 2 users think winFAH.exe is dangerous and recommend removing it.

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Best practices for resolving winFAH issues

A clean and tidy computer is the key requirement for avoiding problems with winFAH. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic 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 resmon 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 DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the winFAH.exe process on your computer, the following programs have proven to be helpful: Security 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. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

winFAH.exe [all]