What is WinFlash?

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

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

WinFlash.sys file information

The process known as WINFLASH belongs to software WINFLASH or FlashMenu by Phoenix Technology (

Description: WinFlash.sys is not essential for Windows and will often cause problems. The WinFlash.sys file is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 3,548 bytes (75% of all occurrences) or 10,848 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. There is no description of the program. The program has no visible window. There is no detailed description of this service. The file is not a Windows core file. The process is not active. WinFlash.sys appears to be a compressed file. Therefore the technical security rating is 27% dangerous, however you should also read the user reviews.

Uninstalling this variant: If you want to remove the program completely, go to Control Panel ⇒ Software ⇒ FlashMenu.

Recommended: Identify WinFlash.sys related errors

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

Abit flash menu
This program is for flashing the BIOS of my Shuttle SK43G computer from within Windows.
  TMUhlmann   (further information)
Used with ABIT BIOS flashing util for ABIT boards
Nothing, that's why I'm trying to find out. A notice of a update was sent to me, when I ran the update , a window pops up with ::winflash:: alert saying winflash will shut down Your system. Why would this come from the makers of the I stopped the update..Until I find out more, I will not use the up date for BOIS system

Summary: Average user rating of WinFlash.sys: based on 4 votes with 4 user comments. One user thinks WinFlash.sys is essential for Windows or an installed application. One user thinks it's probably harmless. One user thinks it's neither essential nor dangerous. One user suspects danger.

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Best practices for resolving WinFlash issues

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

WinFlash.sys [all]