What is wnmflt?

Wnmflt.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 wnmflt.sys is a Windows system file or if it belongs to an application that you can trust.

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

Wnmflt.sys file information

The process known as WnmFlt or Wifi Monitor Filter Plugin belongs to software Panda Network Manager or Wifi Monitor Filter Plugin by Panda Security, S.L ( or Panda Software International (

Description: Wnmflt.sys is not essential for Windows and will often cause problems. Wnmflt.sys is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 16,256 bytes (60% of all occurrences), 11,264 bytes or 46,856 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The program is not visible. The service has no detailed description. It is not a Windows core file. The application has no file description. wnmflt.sys appears to be a compressed file. Therefore the technical security rating is 39% dangerous; however you should also read the user reviews.

Recommended: Identify wnmflt.sys related errors

Important: Some malware camouflages itself as wnmflt.sys. Therefore, you should check the wnmflt.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

Keine offensichtliche Verbindung zu laufenden Programmen --- potenziell Spyware, habe den Dienst beendet.
  Th. J├Ârger  

Summary: Average user rating of wnmflt.sys: based on 1 vote with 1 user comment. One user suspects danger.

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Best practices for resolving wnmflt issues

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

wnmflt.sys [all]