What is Res.exe?

The genuine Res.exe file is a software component of ALi USB Detector by ALi.
Res.exe is an executable file that belongs to the ALi USB Detector, a program that recognizes USB ports installed on the computer. This is not a critical Windows component and should be removed if known to cause problems. ALi Corporation (formerly known as Acer Laboratories Inc.) is an American company that manufactures core logic chipsets, integrated circuits, and imaging peripherals. The company was founded in 1987 as a subsidiary of the Acer Group. It is currently headquartered in Taipei, Taiwan.

Res stands for ALi Resource Monitor

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 Res.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.

Click to Run a Free Scan for Res.exe related errors

Res.exe file information

Windows Task Manager with Res
Res.exe process in Windows Task Manager

The process known as usb1 belongs to software ali usb1 or LSF 62dmu RES or Stubbs the Zombie by ali (

Description: Res.exe is not essential for Windows and will often cause problems. Res.exe is located in a subfolder of "C:\Program Files" or sometimes in a subfolder of C:\Windows. Known file sizes on Windows 10/8/7/XP are 65,536 bytes (78% of all occurrences), 118,784 bytes, 122,880 bytes, 270,336 bytes or 73,728 bytes. 
There is no information about the author of the file. It is not a Windows core file. The software starts upon Windows startup (see Registry key: MACHINE\Run, Run). The program is not visible. Therefore the technical security rating is 52% dangerous, however you should also read the user reviews.

Uninstalling this variant: In case of any problems with Res.exe, you can completely remove Stubbs the Zombie (Control Panel ⇒ Uninstall a Program).

Recommended: Identify Res.exe related errors

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

It suddenly appeared in my tsr, is a locked file and seems to prevent usb access to external drive
Res.exe is part of the USB toolbox that comes with external hotswap drives. Required for fast data transfers intact to IDE drive in external bay
I had one in windows\system32 folder and my computer did not function right, particularly firefox.
Whenever I close Win DVD and I eject the DVD itself, res.exe. pops up.
  Steve Daly  
When it is running my drive Keeps "clicking" away and it is annoying... as it actively doing something i would like to know why so that i can decide if i can tolerate its constant activity otherwise i am going to have to kill it.
Res.exe is part of USB toolkit located at C:\Program Files\USBToolbox. Prevented me from accessing USB memory sticks such as my camera. Renaming to .e_e and killing the process resolved all of my issues. Therefore I rate this file as not necessary.
remove the maleware
Utilities to run from your USB drive
  Møller   (further information)
This program is really annoying because I eject the disk from the drive, and even though I tell it to cancel the operation, it still comes up again and again, no matter how many times I try. It also places itself on top of other windows, meaning I must either end the process through the task manager or put another disk in.

Rating chart

Summary: Average user rating of Res.exe: based on 16 votes with 9 user comments. 3 users think Res.exe is essential for Windows or an installed application. 6 users think it's probably harmless. 2 users think it's neither essential nor dangerous. 4 users suspect danger. One user thinks Res.exe is dangerous and recommends removing it. One user is not sure about it.

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Best practices for resolving Res issues

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

Res.exe [all]