What is ADUserMon.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 ADUserMon.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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ADUserMon.exe file information

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

The process known as Active Disk User Monitor belongs to software Iomega Active Disk or Active Disk by Iomega (

Description: ADUserMon.exe is not essential for Windows and will often cause problems. ADUserMon.exe is located in a subfolder of "C:\Program Files"—mainly C:\Program Files\Iomega\AutoDisk\. Known file sizes on Windows 10/8/7/XP are 147,456 bytes (94% of all occurrences) or 106,496 bytes. 
The program has no visible window. It is not a Windows core file. The process can be removed using the Control Panel's Add\Remove programs applet. The process starts upon Windows startup (see Registry key: MACHINE\Run). ADUserMon.exe is able to record keyboard and mouse inputs. Therefore the technical security rating is 41% dangerous; however you should also read the user reviews.

Uninstalling this variant: You have the option to uninstall Active Disk from your computer using the Control Panel applet Uninstall a Program.

Recommended: Identify ADUserMon.exe related errors

External information from Paul Collins:

Important: Some malware camouflages itself as ADUserMon.exe. Therefore, you should check the ADUserMon.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

Using control/Remove programs panel in XP does not delete this file as not specified separately. Will not delete from Programme files either.

Summary: Average user rating of ADUserMon.exe: based on 2 votes with 1 user comment. 2 users think it's neither essential nor dangerous.

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Best practices for resolving ADUserMon issues

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

ADUserMon.exe [all]