What is UimBus?

The genuine UimBus.sys file is a software component of Universal Image Mounter Controller by Windows.
Uimbus.sys facilitaties communication for mounting a variety of images in Microsoft Windows. It assists in detecting and managing the image type and determining how to proceed with the mounting process. An image is a file that contains an exact copy of a type of media, such as an iso file. Additionally, Windows sometimes loads contents of media onto a virtual image that only exists in memory while the media is connected to the computer.

UIMBus stands for Universal Image Mounter Bus

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

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

UimBus.sys file information

The process known as Image Mounter SCSI Port Driver or A part of Paragon System Utilities belongs to software Universal Image Mounter Controller or Paragon Hard Disk Manager by Windows ( (version 2000 DDK provider) or Paragon Software Group (

Description: UimBus.sys is not essential for the Windows OS and causes relatively few problems. UimBus.sys is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 32,048 bytes (40% of all occurrences), 32,080 bytes or 33,072 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The program is not visible. It is a Verisign signed file. The file has a digital signature. The service has no detailed description. UimBus.sys is not a Windows system file. UimBus.sys appears to be a compressed file. Therefore the technical security rating is 8% dangerous, however you should also read the user reviews.

Uninstalling this variant: You have the option to completely remove Paragon Hard Disk Managerâ„¢ (Control Panel ⇒ Uninstall a Program).

Recommended: Identify UimBus.sys related errors

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

part of Paragon Hard Disk Manager, a disk managing tool
  mee   (further information)

Summary: Average user rating of UimBus.sys: based on 1 vote with 1 user comment. One user thinks UimBus.sys is essential for Windows or an installed application.

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Best practices for resolving UimBus issues

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

UimBus.sys [all]