What is USBDLM.exe?

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 USBDLM.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.

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USBDLM.exe file information

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

The process known as USB Drive Letter Manager or USB Drive Letter Manager (Win32) belongs to software USB Drive Letter Manager or USBDLM by Uwe Sieber - (

Description: USBDLM.exe is not essential for Windows and will often cause problems. The USBDLM.exe file is located in a subfolder of "C:\Program Files" or sometimes in a subfolder of C:\. Known file sizes on Windows 10/8/7/XP are 157,184 bytes (12% of all occurrences), 226,816 bytes and 10 more variants. 
The program is not visible. The USBDLM.exe file is not a Windows core file. USBDLM.exe is able to monitor applications and record keyboard and mouse inputs. Therefore the technical security rating is 36% dangerous, however you should also read the user reviews.

Uninstalling this variant: You can uninstall the program USB drive letter manager or short description, update it, or ask Customer Support for help. Go to to update it, go to or for support, or go to USB drive letter manager or short description in Windows Control Panel (Software or Programs section) to uninstall it.

Recommended: Identify USBDLM.exe related errors

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

Gibt dem Anwender Kontrolle über vom Betriebssystem zugewiesene Laufwerksbuchstaben für Wechselmedien. (Kann auch Laufwerksbuchstaben bei leerem Cardreader komplett entfernen)
  Beniditas   (further information)
It's spyware
Utility to help manage drive letter assignments for usb storage devices
  Odin Sonnah   (further information)
G-Data meldet usbdlm.exe als vermeintlich bösartig. Habe da Pg deinstalliert.
  Gustav Hengster  
Ich verwende es seit Jahren. Es löst einige Windows-Probleme mit Laufwerkbuchstaben (z.B. Überschreiben einer Netzlaufwerkkennung durch Wechseldatenträger) und hat einige Goodies. Möchte nicht darauf verzichten.
  Alfred Schamburger  

Summary: Average user rating of USBDLM.exe: based on 5 votes with 5 user comments. 3 users think USBDLM.exe is essential for Windows or an installed application. One user suspects danger. One user thinks USBDLM.exe is dangerous and recommends removing it.

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Best practices for resolving USBDLM issues

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

USBDLM.exe [all]