What is dne2000?

The genuine dne2000.sys file is a software component of Deterministic Network Enhancer Miniport by Deterministic Networks.
Citrix supplies software to numerous software and hardware companies so when their products are installed on systems they will often contain DNE. DNE extends operating systems and network protocol devices and introduces measurement and controls. These extensions are used to build products that provide intrusion detection, VPNs, Network Address Translation (NAT), traffic measurement, response time measurement, bandwidth control, compression, content filtering and protection, policy management and other services. The Deterministic Networks website automatically transfers to

DNE2000 stands for Deterministic Network Enhancer 2000

Dne2000.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 dne2000.sys is a Windows system file or if it belongs to an application that you can trust.

Run a free scan to check for dne2000 drivers in need of updating

Dne2000.sys file information

The process known as Deterministic Network Enhancer belongs to software Deterministic Network Enhancer Miniport or Cisco Systems VPN Client by Deterministic Networks (

Description: Dne2000.sys is not essential for the Windows OS and causes relatively few problems. Dne2000.sys is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 110,080 bytes (25% of all occurrences), 139,604 bytes and 8 more variants. 
The driver can be started or stopped from Services in the Control Panel or by other programs. There is no file information. The program is not visible. The service has no detailed description. Dne2000.sys is not a Windows core file. The file is a Microsoft signed file. dne2000.sys appears to be a compressed file. Therefore the technical security rating is 24% dangerous, however you should also read the user reviews.

Uninstalling this variant: If you experience any issues with installation of dne2000.sys, you may want to uninstall the program using the Control Panel ⇒ Uninstall a ProgramCisco Systems VPN Client.

Recommended: Identify dne2000.sys related errors

Important: Some malware disguises itself as dne2000.sys, particularly when not located in the C:\Windows\System32\drivers folder. Therefore, you should check the dne2000.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

Used by the Cisco VPN Client
Deterministic Network Enhancer
    (further information)
It is part of various VPN clients, and comes from a company called Deterministic Networks.
  RH   (further information)
It's a file from CISCO VPN Client
  eenwi   (further information)
It is commonly installed with VPN Software, but I had a problem with a conflict with the driver and Windows XP Media Center Edition
  Richard Petro  
used by certain VPN Client Softwares. Cisco, Sonicwall, etc.
Is driver of the windows xp
Deterministic Networks file for VPN and more
    (further information)
Since I installed Ci
Part of Cisco Systems VPN. Seems to be essential on networks that run VPN across WAN links on extensive and diverse "internal" networks.
It appear in my PC when I installed Cisco VPN Client
Used with WinProxy, may cause Blue Screen Of Death
Cisco VPN
I have WinXp SP2, Sygate Pers. Firewall and VPN Cisco Installed but only connected to the intrenet used with Cisco VPN. When I bock dne2000.sys in firewall, network and internet don't work.
Part of Sonic WALL VPN client, among others. May cause a conflict with update KB935280 for Windows Vista. Uninstall the VPN client before installing this update, or do a system restore to a point prior to installing the update and uninstall.
  David   (further information)
OS crash on a Windows 2000 Server with Cisco VPN 3.6.3 Client
Belongs to VPN Client
file giving me problems when i try to instal VPN client on vista, says coompatibility problems but wont work even after setting the compatibility options for xp
Part of Sonicwall VPN client
essential for Cisco VPN but also causes lots of blue screens of death. I have yet to find a way around the problem but can't afford to get rid of it either.
When I boot a Compaq Deskpro EN with Win2000 Pro I get an error message that the file cannot be read in/entered. From where to where? From its place on the HDD to the activated version of the OS? Checking the Driver folder there was no such file, so I assumed due to the error message from Compaq. i,e,, the system software it was supplied with originally, that it was missing and that the solution was to download it from MS and enter it into the Driver folder. The Deskpro is from 98, and I wonder whether VPNs were used then. I will report back with further information of my search.
  Henning Transgaard  
It is a part of NetScreen Remote for juniper networks
Affects both Pidgin (IM) connections and VPN/RDP software, such as LogMeIn
Part of Cisco VPN client. Crashes sometimes (BSoD)

Rating chart

Summary: Average user rating of dne2000.sys: based on 27 votes with 24 user comments. 17 users think dne2000.sys is essential for Windows or an installed application. 5 users think it's probably harmless. 3 users think it's neither essential nor dangerous. One user suspects danger. One user thinks dne2000.sys is dangerous and recommends removing it. 4 users don't grade dne2000.sys ("not sure about it").

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Best practices for resolving dne2000 issues

A clean and tidy computer is the key requirement for avoiding problems with dne2000. 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 dne2000.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

dne2000.sys [all]