How to remove the WinFLdrv virus

Most antivirus programs identify WinFLdrv.sys as malware.

The free file information forum can help you find out how to remove it. If you have additional information about this file, please leave a comment or a suggestion for other users.

Click to Run a Free Virus Scan for the WinFLdrv.sys malware

WinFLdrv.sys file information

The process known as WinFLdrv appears to belong to software WinFLdrv by Inc. SDN. BHD (

Description: WinFLdrv.sys is not essential for Windows and will often cause problems. The file WinFLdrv.sys is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 17,984 bytes (75% of all occurrences) or 10,752 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The WinFLdrv.sys file is a file with no information about its developer. The program has no visible window. WinFLdrv.sys is not a Windows system file. File is hidden. WinFLdrv.sys is certified by a trustworthy company. WinFLdrv.sys appears to be a compressed file. Therefore the technical security rating is 80% dangerous, however you should also read the user reviews.

Recommended: Identify WinFLdrv.sys related errors

If WinFLdrv.sys is located in a subfolder of C:\Windows, the security rating is 82% dangerous. The file size is 21,888 bytes. There is no file information. File is hidden. The program has no visible window. The file has a digital signature. It is not a Windows system file. WinFLdrv.sys appears to be a compressed file.

Uninstalling this variant: You can uninstall Inc. SDN. BHD., or try to get help from the software vendor. Click on Inc. SDN. BHD. in the Windows Control Panel (Software or Programs section) to uninstall it, or click on to visit the vendor's website.

Important: You should check the WinFLdrv.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

According to Avast antivirus, which picked this file up, this file is a dangerous rootkit.
  D. McCabrey  
A service for Folder Lock software so it is safe. False Positive. If you want Folder Lock to function keep it. It is hidden to prevent OTHER users from finding out about it or a folder you may have hidden.

Summary: Average user rating of WinFLdrv.sys: based on 2 votes with 2 user comments. One user thinks it's neither essential nor dangerous. One user thinks WinFLdrv.sys is dangerous and recommends removing it.

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Best practices for resolving WinFLdrv issues

The following programs have also been shown useful for a deeper analysis: Security Task Manager examines the active WinFLdrv process on your computer and clearly tells you what it is doing. Malwarebytes' well-known anti-malware tool tells you if the WinFLdrv.sys on your computer displays annoying ads, slowing it down. This type of unwanted adware program is not considered by some antivirus software to be a virus and is therefore not marked for cleanup.

A clean and tidy computer is the key requirement for avoiding PC trouble. 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.

Other processes

WinFLdrv.sys [all]