What is omci?

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

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

Omci.sys file information

The process known as OMCI Device Driver or OMCI WDM Device Driver belongs to software OMCI WDM Device Driver or OMCI Driver by Dell Computer ( or Dell (

Description: Omci.sys is not essential for Windows and will often cause problems. Omci.sys is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 13,632 bytes (45% of all occurrences), 17,153 bytes and 4 more variants. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The program has no visible window. There is no detailed description of this service. It is not a Windows core file. omci.sys appears to be a compressed file. Therefore the technical security rating is 39% dangerous, however you should also read the user reviews.

Uninstalling this variant: If you are having problems with omci.sys, you can uninstall OMCI software via Windows Control Panel/Add or Remove Programs (Windows XP) or Programs and Features (Windows 10/8/7).

Recommended: Identify omci.sys related errors

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

DELL OMCI software instrumentation agent
  Georg   (further information)
It is used with Dell's OpenManage software
  Dwayne   (further information)
supposedly a windows driver, but comes back insigned, I removed it and so far with no ill effects
  Joe D  
I have no absolutly idea
  Coty Riddle  
my dvd optical drive stopped working and the troubleshooter said it was because it was unable to retrieve omci.sys file so I am thinking that file is critical and I am wodering how to get it back
it is located in c:'window\system32\drivers on both my dell laptops
OpenManage Client Instrumentation (OMCI) is a software agent that is pre-installed standard on all OptiPlexTM systems and is available as an option on all Dell PrecisionTM workstations and all LatitudeTM notebooks. Used in conjunction with management console software, such as Dell OpenManage IT Assistant or third-party products, OMCI enables administrators to collect hardware inventory and configuration information, receive proactive notification of potential fault conditions and remotely perform BIOS updates on one or a group of Dell systems.
Required on Dell Laptop for Windows XP Repair. Found at windows\system32\drivers, and repair continued
Dell driver in c:\windows\system32\drivers . I needed it to install Dell Acess Direct software that allows one touch internet browser launch.
my Dell laptop continually asks for omci.sys but fails to read it
  Peter A  
The OMCI driver for Dell systems only is an interface between the BIOS CIM information and the Windows WMI allowing low level reporting and modification of the computer without a reboot. Common usage is to turn on/off Wake On Lan functionality. It is safe to uninstall using Add/Remove programs. as a System Driver do not just delete it.
  Midnight Engineer   (further information)
It is listed in my Device Manager under Non-Plug-and-Play devices, as having a defect, code 24 "driver not installed or device not present". It is not on my system disk in the place specified above. Search says it isn't anywhere (not anything named "omci".) My laptop is a Dell Inspiron (not Latitude, though 'related' or somewhat similar in design aspects and some parts used.) Nor is it referenced (oddly enough) in the Registry anywhere. How did it get onto my Inspiron? I don't know.
  Russell Hess  
Dell™ OpenManage™ Client Instrumentation (OMCI) 7.5 is the newest version of a Dell-developed software application that enables desktops, workstations, and mobile clients to be remotely managed.
  rdeisley   (further information)
something along the lines of Open Manage Client Interface, My understanding is it is used when your computer is connected to a network to enable an external user to control your machine for troubleshooting etc. Apparently a corrupted element within it is responsible for warning event notificaitons I am receiving warning me that disk space has dropped below the minimum threshold.. Apparently not required for normal at home operation ,see links for more details
  Rich   (further information)

Rating chart

Summary: Average user rating of omci.sys: based on 17 votes with 14 user comments. 7 users think omci.sys is essential for Windows or an installed application. 2 users think it's probably harmless. 5 users think it's neither essential nor dangerous. One user suspects danger. 2 users think omci.sys is dangerous and recommend removing it. 2 users don't grade omci.sys ("not sure about it").

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Best practices for resolving omci issues

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

omci.sys [all]