What is wfxsnt40.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 wfxsnt40.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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Wfxsnt40.exe file information

Windows Task Manager with wfxsnt40
Wfxsnt40.exe process in Windows Task Manager

The process known as Delrina Fax Port Launcher belongs to software Microsoft® Windows NT™ WinFax Printer Driver by Microsoft (

Description: Wfxsnt40.exe is not essential for the Windows OS and causes relatively few problems. Wfxsnt40.exe is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 45,568 bytes (51% of all occurrences), 43,008 bytes or 43,520 bytes. 
Wfxsnt40.exe is not a Windows core file. The program is not visible. Wfxsnt40.exe is an unknown file in the Windows folder. The process is loaded during the Windows boot process (see Registry key: MACHINE\Run). Therefore the technical security rating is 58% dangerous, however you should also read the user reviews.

Recommended: Identify wfxsnt40.exe related errors

External information from Paul Collins:
There are different files with the same name:

Important: Some malware disguises itself as wfxsnt40.exe, particularly when not located in the C:\Windows\System32 folder. Therefore, you should check the wfxsnt40.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

Symantec WinFax Druckertreiber
Diese Datei wurde als Bestandteil von Symantec Winfax Pro 10.0 mit installiert.
WinFax Fax Port Launcher task. This task will also show as a Delrina product, which is what WinFax used to be before it was bought by Symantec, and it will also show as a Windows XP WinFax Printer Driver because the faxing feature within Windows XP is from WinFax. This task appears only on Windows NT4/2000/XP/2003.
  Gabriel Dumitrascu   (further information)
WinFax Pro 10 - file
Part of WinFax Pro v10. Other related processes, also part of WinFax Pro, are: wfxctl32.exe wfxsvc.exe, wfxmod32.exe, wfxswtch.exe .

Summary: Average user rating of wfxsnt40.exe: based on 5 votes with 5 user comments. 5 users think wfxsnt40.exe is essential for Windows or an installed application. 2 users don't grade wfxsnt40.exe ("not sure about it").

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Best practices for resolving wfxsnt40 issues

A clean and tidy computer is the key requirement for avoiding problems with wfxsnt40. 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 wfxsnt40.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

wfxsnt40.exe [all]