What is symlcbrd?

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

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

Symlcbrd.sys file information

The process known as Symantec Core Component or symlcbrd belongs to software symlcbrd or Symantec Core Component by Symantec (

Description: Symlcbrd.sys is not essential for Windows and will often cause problems. Symlcbrd.sys is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 2,397 bytes (62% of all occurrences), 10,344 bytes, 4,608 bytes or 4,096 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The program is not visible. The service has no detailed description. It is not a Windows system file. The software has no file description. symlcbrd.sys appears to be a compressed file. Therefore the technical security rating is 43% dangerous, however you should also read the user reviews.

Recommended: Identify symlcbrd.sys related errors

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

Seems to be Symantec
Norton AntiVirus low level driver
  Chuck Dunne   (further information)
part of Symantec Norton Internet Security
  Georg   (further information)
Yes part of NiS or NAV
  Antonio Pulido  
It caused a found new hardware and Windows install new hardware to appear on reboot. It appeared after I downloaded Symantec /Norton antivirus. Then found that It used 10 to 15 % of my processor. When I uninstalled the Symantec product, I had to spend a couple of hours locating all the remaining files and manually remove them. Still coulden't get the pest out. Finally went to My Computer/Properties/Device Manager and found it highlighted in yellow and attached to MCSTRM, a RealPlayer scheduler or some such. I right clicked it and deleted it and then right clicked MSTRM and disabled that.
  Ron O  
Following up on my previous posting. What I did stopped the problem and removed the cursed thing. At this point I truelu think Norton AntiVirus is a virus unto itself. My advice. Get AVG.
  Ron O  
It is listed by Symantec as one of their low level drivers
  Marc   (further information)
It comes up on found new hardware on boot.
Hi, Everytime I start my pc, it keeps telling me theres new hardware detected and if I would like to install the new hardware symlcbrd. There is no Symantic (Norton AV) on this pc but there was up until last week. It might be a left over component but I don't understand the new hardware message so now I am going to give the pc a good clean-up. If it is still there giving the same message after I have cleaned I remove it! There are two more messages about hardware, about a printer thats not there and a file called tmfilter which I think has to do with Trend Micro AV that is running now(I hope)
Note: Any malware can be named anything - so you should check where the files of the running processes are located on your disk. If a "non-Microsoft" .exe file is located in the C:\Windows or C:\Windows\System32 folder, then there is a high risk for a virus, spyware, trojan or worm infection!
    (further information)
Definitely a Symantec file. It is a NAV driver, don't erase it.
  Doron   (further information)
Same experience as Ron had, plus that it made my boot excruciatingly slow and slows down the processor after that. Norton Antivirus 2002 never gave any trouble but this is a pest. I am going to throw away my 45 euro Norton rubbish and get myself a McAfee.
Part of Norton AntiVirus
necessary for norton anti vir but doesn't uninstall when uninstalling norton
was in C:\WINDOWS\system32\drivers
A pain when left behind by removing Norton as it keeps loading some basic part of Norton Internet Worm protection if your system had it.

Rating chart

Summary: Average user rating of symlcbrd.sys: based on 17 votes with 16 user comments. 8 users think symlcbrd.sys is essential for Windows or an installed application. 3 users think it's probably harmless. 2 users think it's neither essential nor dangerous. One user suspects danger. 3 users think symlcbrd.sys is dangerous and recommend removing it. 3 users don't grade symlcbrd.sys ("not sure about it").

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Best practices for resolving symlcbrd issues

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

symlcbrd.sys [all]