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What is symndis?

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

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

Symndis.sys file information

The process known as NDIS Filter Driver belongs to software Symantec Security Drivers or Symantec Network Filter Driver by Symantec (www.symantec.com).

Description: Symndis.sys is not essential for Windows and will often cause problems. Symndis.sys is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 35,256 bytes (66% of all occurrences) or 37,424 bytes. https://www.file.net/process/symndis.sys.html 
The driver can be started or stopped from Services in the Control Panel or by other programs. The program has no visible window. The symndis.sys file is a Verisign signed file. Symndis.sys is digitally signed. There is no detailed description of this service. The symndis.sys file is not a Windows system file. The application can be uninstalled in the Control Panel. symndis.sys appears to be a compressed file. Therefore the technical security rating is 6% dangerous, however you should also read the user reviews.

Uninstalling this variant: In case of any problems with symndis.sys, you can safely remove the program using the uninstall program of SymNet (Control Panel ⇒ Uninstall a Program).

Recommended: Identify symndis.sys related errors

If symndis.sys is located in a subfolder of C:\Windows\System32\drivers, the security rating is 20% dangerous. The file size is 36,400 bytes (80% of all occurrences) or 37,296 bytes. The program has no visible window. The file is a Verisign signed file. The symndis.sys file is digitally signed. There is no detailed description of this service. The symndis.sys file is not a Windows core file. symndis.sys appears to be a compressed file.

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

Score

User Comments

Part of Symantec Norton Internet Security suite
  Georg   (further information)
Symantec antivirus
  Nguyen Thanh Long  

Summary: Average user rating of symndis.sys: based on 2 votes with 2 user comments. One user thinks symndis.sys is essential for Windows or an installed application. One user thinks symndis.sys is dangerous and recommends removing it.


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Best practices for resolving symndis issues

A clean and tidy computer is the key requirement for avoiding problems with symndis. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic 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 6resmon 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 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the symndis.sys process on your computer, the following programs have proven to be helpful: ASecurity 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. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.



Other processes

symndis.sys [all]