What is utscsi.exe?

The genuine utscsi.exe file is a software component of UTSCSI Application by USBest.
USBest manufactures a wide variety of USB flash drives and storage devices. The UTSCSI application is said to be related to the PQI Group's U510 credit-card shaped USB device first introduced in 2006. Some USB flash drives come with an installation CD and this is said to install when the CD does. It uses very little memory yet seriously hinders or slows PC performance without having a clearly evident function. USBest is evidently in mainland China, (their website has no location information), whereas PQI was in Taiwan. Milestones reported on PQI's website end at 2012 and USBest's website says it is introducing a new card-type drive so they may have acquired PQI.

UTSCSI stands for USB Thumbdrive Small Computer Systems Interface

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 utscsi.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 utscsi.exe related errors

Utscsi.exe file information

Windows Task Manager with utscsi
Utscsi.exe process in Windows Task Manager

The process known as UTSCSI Application belongs to software UTSCSI Application or Usbest Service Zero or USBest Service Zero or Adobe Acrobat by USBest (

Description: Utscsi.exe is not essential for Windows and will often cause problems. The utscsi.exe file is located in the C:\Windows\System32 folder or sometimes in a subfolder of C:\Windows or in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 45,056 bytes (78% of all occurrences) or 45,568 bytes. 
The program is not visible. Utscsi.exe is an unknown file in the Windows folder. The file is not a Windows core file. The file is a file with no information about its developer. Therefore the technical security rating is 57% dangerous, however you should also read the user reviews.

Uninstalling this variant: In case of any problems with utscsi.exe, you can do the following:
  1) remove the entire program USBest Service Zero using Windows Control Panel
  2) visit the website
  3) find out if there is a newer version available.

Recommended: Identify utscsi.exe related errors

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

Beim Googlen nach der Firma USBest stieß ich auf einen USB-Stick, den ich mal hatte. Offenbar kommt das Programm von diesem und sollte (aber wer weiß es schon genau) harmlos sein. Ich werde es löschen; den Stick hab ich eh nicht mehr und wenn, dann sollte er auch ohne die Datei laufen.
UTSCSI.EXE is related to PQI Card Drive U510 1GB device. UTSCSI.EXE is a USBest Service Zero.
Utterly useless and resource sucking background service installed when a user installs the CD that comes with some USB thumb drives (Memory sticks / Flash memory / USB memory / Pen Drive). This service is also installed when you run the installation CD of the MajicJack Internet calling device. From our tests, and from our experience, despite using very little memory this service performs no function other than seriously impact the performance of the PC. It will often cause PC slowness, regular problems when burning CDs and DVDs, stuttering Internet video streaming, or slow network performance
  Tom   (further information)
It's installed in my machine and I dont have Magic Jack or memory sticks.
UTSCSI.EXE showed up after dealing with Magic Jack which I did not install. It may be from the device itself or from software related to its installation and use that could be malware. It does not identify itself as having a manufacturer, but does have a country of Taiwan. I removed it by killing the process under Process XP and deleting it and the prefetch file at the same time, after i made a copy that is non-executable.
  pc tech  

Summary: Average user rating of utscsi.exe: based on 3 votes with 5 user comments. One user thinks utscsi.exe is essential for Windows or an installed application. 2 users think it's neither essential nor dangerous. 3 users don't grade utscsi.exe ("not sure about it").

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Best practices for resolving utscsi issues

A clean and tidy computer is the key requirement for avoiding problems with utscsi. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic 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 6resmon 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 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the utscsi.exe process on your computer, the following programs have proven to be helpful: ASecurity 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. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

utscsi.exe [all]