How to remove an vsdatant error

Vsdatant.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 OS, hardware etc.
The free file information forum can help you determine if vsdatant.sys belonging to the Windows system or an application you can trust.

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

Vsdatant.sys file information

The process known as TrueVector Device Driver or ZoneAlarm Firewalling Driver belongs to software TrueVector Device Driver or ZoneAlarm Pro or ZoneAlarm Security Suite or ZoneAlarm or ZoneAlarm Anti-virus by Zone Labs (www.zonelabs.com) or Check Point Software Technologies LTD.

Description: The file vsdatant.sys is located in the folder C:\Windows\System32. Known file sizes on Windows 7/XP are 372,816 bytes (21% of all occurrences), 392,824 bytes and 22 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. It is a Verisign signed file. File vsdatant.sys is digitally signed. The service has no detailed description. Vsdatant.sys is not a Windows system file. vsdatant.sys seems to be a compressed file. Therefore the technical security rating is 14% dangerous, however also read the users reviews.
In the event of any problems with vsdatant.sys, you can also uninstall ZoneAlarm or ZoneAlarm Pro software via Windows Control Panel/Add or Remove Programs (Windows XP) or Programs and Features (Windows 7/Vista).

Recommended: Identify vsdatant.sys related errors

If vsdatant.sys is located in the folder C:\Windows\System32\drivers, the security rating is 0% dangerous. The file size is 454,744 bytes. Vsdatant.sys is a Windows system file. The program has a visible window. Vsdatant.sys is a Verisign signed file. vsdatant.sys is able to record inputs.

Important: Some malware camouflages itself as vsdatant.sys, particularly when located in the c:\windows or c:\windows\system32 folder. Therefore, you should check the vsdatant.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

used in Zonelabs Zonealarm program go to zonelabs site and download alternative driver file

something left behind after a zonealarm uninstall

it s causing my computer to restart at start up

I want to delete the file
Murali Krishnan

I confirm its related to Zone Alarm. It gave me crashes (blue screen of death) when using IExplorer. - system: XP SP2, ZoneAlarm non-commercial, updated in August 2005. Problem actually started to appear after update. If file is removed, ZA stops working, obviously.
SMacedo

Believe part of Zone Alarm Pro
Alan

Be sure to remove from Registry
Troy Mullins

trojans hides in it found tr/dldr.zlob can only find with avast during pre boot scan //advise
johnny on the spot

I have no problems on my desktop but my portable crashes with blue screen + ntoskrnl & vsdatant.sys. My solution is to use vad*.sys ver. 3.7.143 (2003 file) on the portable
John St

This program gets loaded over and over again untill the computer stops working . I have found it to be loaded up into the hundreds of times.
Dan

Zone Alarm "Firewall" program driver
Kevin

After a Zone alarm upgrade, Norton utilities detected file was missing. However, it does not create problem: Zone alarm works without it
JLC

causing blue screen of death after booting (Win XP Pro/Dell Dimension 9150/Intel DCP
Fergus

Causes system crash with Cisco VPN client V3

Part of CheckPoint Integrity client product
Rick Mahn (further information)

twice been the source of computer failing to boot
doc paul

Belongs to zone alarm nothing wrong with it i've got no problems
Anacho

used in Zonelabs Zonealarm program

189792 bytes file caused Windows bugcheck (STOP screen); ZoneAlarm had been removed years previously
Mark

ebenfalls Bestandteil des Cisco VPN Clienten // part of the Cisco VPN client
Quedel (further information)

device manager, show hidden devices, non plug and play drivers, disable vsdatant
mokke

It is also used by CISCO VPN application if you have stateful firewall enabled
Re Álvarez

It caused my system to repeatedly reboot. It should have been removed when I uninstalled ZA. Therefore, I think it's a malicious leftover file.
cojys6

ZoneAlarm Firewall (Core-) Protection Service. -- If you have Zonealarm do not stop this service ;)- ....
DiGiFinE

it was the problem what my computer did startup everytime. 3 nights searching before I find it. Thanks for help!!! I removed the file from the system32 folder by using command promt. Finally!!!
Gijs

It cause the "Blue Screen of death" when u start the pc at first time. After that u reset and when u reboot the pc this file don't work and u can use the pc.
-theAcId-

If the files size is other than that mentioned, should it be removed?
jill

Zone alarm File

whenever i restart my pc it gives me the blue screen of death. this happens a lot now. ever since i started to use internet explorer. its either a coincodence or I.E. is causing the problem

As of Oct-2006 the new version is BSOD for Windows 2000
Shannon Jacobs

Vsdatant.sys is also a legit component of Cisco VPN Client software. I believe that they use Zone Alarm soft as part of their stateful firewall.
Alan Batten

I uninstalled Zone Alarm (free) and installed Zone Alarm Pro and now this appears in RegSeeker as an orphan to be deleted.
Johnny Faster

Truevector device driver is necessary for Zonealarm (firewall). Do not remove unless have a replacement ready. (Reminder: check if something is trying to masquerade as vsdatant.sys)
AySz88

Do we need zone alarm in xp? I'm going to kill anyway
FourQ XP

Also used in Cisco secure VPN client as part of the firewall security. This has caused bsod, but can't get rid of it and still vpn in to work.
smccarthy

vdsdatant causes windows stop blue screens less than 2 minutes after booting the laptop, there was no solution from dell but uninstalling zonealarm security suite in windows save mode solved the problem!
jasper

According to Process Explorer it "belongs to" Zone Labs on my XP SP2 box.
Alan (further information)

Indeed it is also used by Cisco VPN client, the statefull firewall part. Caused problems on my machine. Disabling service vsdatant in regedit solved problems concerning connecting to tcp port 80.. (Which makes you wonder why it wants to hijack this port?)
DvdB (further information)

After installing en later uninstalling Zonealarm, my Laptop acted in strange way, in the startup i got error and soundcard fail o work. just rename the file vsdatant.sys repair my problem
H Shaban

DeviceIoControl function from the vsdatant.sys driver.may lead to a loss of integrity.
david peire

This file is also used with Cisco VPN Client, if you have stateful firewall enabled. Causes a BSOD with F-Secures firewall.
Dixon

Also used in Cisco VPN Client.
Hans

It can cause 721 error when connecting to VPN
kapo

It is a Zone Alarm file. To remove it: Device Manager, View Show hidden devices, Non plug and play drivers Right Click on vsdatant.sys disable. Uninstall Zone Alarm - then Reinstall if you want.
Ryan the lion Weaks (further information)

It is used by ZoneAlarm. I have gotten BSOD from 394160/397312 bytes. I hope they figure out the problem.
Video Game Dictator

Its registry entry can cause http failure and stop internet connectivity. Can cause NetBios and DHCP to fail (erros 4321 and 2001 respecively). Set its registry start parameter to 3.

I have never used Zone Alarm but I do use Cisco VPN and I have received this error.
Rose

When F-Secure and Cisco VPN client is installed it couses BSOD when VPN is trying to connect. It is part of Cisco VPN soft. If driver is disabled (not removed) everything works fine. This driver interferes with AV (Panda, Kaspersky, F-secure, etc.) software if it has any firewall option, and causes BSOD. As it is started by program on demand, i think it is not essential.
Karolis Narbutas

I think is a Zone Alarm File, I have to disable the multiCore Support in bios in my Dell XPS1210 and windows started good, so, I enabled the MultiCore Option in Bios and reboot and All Works Well, see yaa
Robert (further information)

File used by Zone Alarm firewall, causes blue screen of death. Solution: uninstalling Zone Alarm in Safe Mode.
Piotr Zimoch

Causes BSOD on Dell Latitude D500
chiptechsmith

Installing the Cisco VPN Client software and running the uninstall process shut my home computer's Internet access down for 3 days! It was only after a Microsoft 3rd tier support tech spent over 4 hours inspecting my machine that the culprit was discovered. WATCH OUT FOR THIS PROBLEM IF YOU UNINSTALL CISCO VPN CLIENT!
Bob G,

This file was part of Cisco VPN adapter and was causing blue screens during the launch of various applications. Removing the file solved the problem, but probably disables firewall for VPN also. Haven't found a better solution yet.
Phil

I have been running ZoneAlarm Security for years and never got this problem until I ran DriverCure and updated several drivers. I don't have any information that any of these updates affected vsdatant.sys.
Rene LeBlanc

Zone Alarm driver. True Vector technologies. Verified by Checkpoint Software Technologies LTD.
Jaakko ***

It is a Zone Labs (Zone Alarm) file. True-Vector device driver which is used in its filtering/firewall. Cisco Client VPN software also uses this file as its stateful firewall from Zone Alarm. Do not remove this service or file if you have these products. IF IT CORRUPTS OR IS STILL PRESENT AFTER UNINSTALL -- REMOVE IT. It can cause failure to browse HTTP/port 80 even while you can get to HTTPs/443 and other services, mimics an infection
Christopher Catarella

ZoneAlarm service file

Has also caused random blue screen crash on my Dell latitude D820 several times since i installed VPN client. Don't know yet if can remove it.
Philippe

If the start parameter is set to 2 it blocks or redirects port 80 (http) exactly 10 minutes after a reboot. If the start paremeter is set to 3 the problem goes away.
Jondalar (further information)

vsdatant (Zone Alarm program, not malware) caused a blue screen at boot, Windows said it tried to write to a read only file.
twg

I have it on xp sp3. This file is both part of CISCO VPN and ZONE. Zone has a few dll's and .sys files incorperated into CISCO VPN. The 2 different companies are in league with each other. Ill be updating CISCO VPN client to see if it resolves the BSOD caused by this file.
Jasonian

Caused Blue Screen of Death on my new Delll XPZ 501X. Of note, Zone Alarm was the first program I installed following the purchase of my laptop so I think this is a clear problem with Dell-Windows7-Zone Alarm. Note, I also have Mcaffe installed.
Robert

I find it consistently blocked by Zone Alarm Extreme with Win 7. It's location shown as in the registry. If it's a ZA file then why is it blocked??? Something fishy in Denmark.
Choctaw Leader

ive never used zonealarm on this computer but have vsdatant popping up into taskmanager
magnus alexa

Summary: Average user rating of vsdatant.sys: based on 73 votes with 64 reviews.

19 users think vsdatant.sys is essential for Windows or an installed application. 13 users think it's probably harmless. 25 users think it's neither essential nor dangerous. 9 users suspect danger. 7 users think vsdatant.sys is dangerous and recommend removing it. 5 users doesn't grade vsdatant.sys ("not sure about it").

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