What is symidsco?

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

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

Symidsco.sys file information

The process known as IDS Core Driver belongs to software Symantec Intrusion Detection or SYMIDSCO by Symantec (

Description: Symidsco.sys is not essential for the Windows OS and causes relatively few problems. Symidsco.sys is located in a subfolder of "C:\Program Files\Common Files". Known file sizes on Windows 10/8/7/XP are 240,496 bytes (64% of all occurrences), 250,224 bytes, 251,768 bytes, 268,664 bytes or 158,064 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The program is not visible. The symidsco.sys file is a Verisign signed file. Symidsco.sys is certified by a trustworthy company. The service has no detailed description. Symidsco.sys is not a Windows system file. symidsco.sys appears to be a compressed file. Therefore the technical security rating is 19% dangerous, however you should also read the user reviews.

Uninstalling this variant: You can uninstall Norton 360 from your computer using the Control Panel applet Uninstall a Program.

Recommended: Identify symidsco.sys related errors

Important: Some malware camouflages itself as symidsco.sys. Therefore, you should check the symidsco.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 Symantec Norton Internet Security suite
  Georg   (further information)
Belongs to Norton Internet Security
My 3 symidsco.sys files' weight differs : 200184 bytes in "C:\Program Files\Fichiers communs\Symantec Shared\SymcData\ids-diskless\20060410.080" (14-march-2006). I also have one which weighs 293680 bytes in "C:\Program Files\Norton AntiVirus\IWP\IDSDefs" (12-may-2005)
  Philippe Riondel  
Norton Internet Security
It appears to have become disabled since upgrading from XP to Vista.
  Bill Chubb  
Symantec NAV

Summary: Average user rating of symidsco.sys: based on 6 votes with 6 user comments. 6 users think symidsco.sys is essential for Windows or an installed application. 2 users don't grade symidsco.sys ("not sure about it").

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Best practices for resolving symidsco issues

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

symidsco.sys [all]