Check Point Software Technologies Ltd. ZoneAlarm Antivirus SYS klfltsdk.sys

How to Repair Klfltsdk.sys (Free File Download)

Last Updated: 11/27/2023
[Time Needed for Reading: ~4-6 minutes]

Filter Core [fre_win7_x64_sdk] files such as klfltsdk.sys utilize the SYS file extension. This file is considered a Win64 DLL (Dynamic link library) file, and was first created by Check Point Software Technologies Ltd. for the Coretech Delivery software package.

klfltsdk.sys was first developed on 11/27/2019 for the Windows 10 Operating System in ZoneAlarm Antivirus 15.8.008.18174. This is the most recent release date from Check Point Software Technologies Ltd., according to our records.

In this short article, you will discover detailed file information, steps for troubleshooting SYS file problems with klfltsdk.sys, and list of free downloads for every version that exists in our comprehensive file directory.

File Analysis Provided by Jason Geater (Author)


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File Overview


General Information ✻
File Name: klfltsdk.sys
File Extension: SYS file extension
Description: Filter Core [fre_win7_x64_sdk]
Object File Type: Dynamic link library
File Operating System: Windows NT 32-bit
MIME Type: application/octet-stream
User Popularity Rating:
 
Developer and Software Information
Software Developer: AO Kaspersky Lab
Software Program: Coretech Delivery
Legal Copyright: © 2019 AO Kaspersky Lab. All Rights Reserved.
File Details
Character Set: Unicode
Language Code: English (U.S.)
File Flags: (none)
File Flags Mask: 0x003f
Entry Point: 0x460e0
Code Size: 171008
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What are klfltsdk.sys Error Messages?


klfltsdk.sys Blue Screen of Death (BSOD) Errors

There are a number of reasons why you could be encountering issues with klfltsdk.sys. Most of the issues concerning sys files involve Blue Screen of Death (BSOD) errors. These types of klfltsdk.sys errors can be cause by hardware problems, outdated firmware, corrupt drivers, or other software-related (eg. ZoneAlarm Antivirus update) issues. Some of these errors include:

A problem has been detected and Windows has been shut down to prevent damage to your computer. The problem seems to be caused by the following file: klfltsdk.sys.

:( Your PC ran into a problem that it couldn't handle, and now needs to restart. You can search for the error online: [BSOD] (klfltsdk.sys).

<strong>STOP 0x0000000A: IRQL NOT LESS EQUAL (klfltsdk.sys)</strong><br /><strong>STOP 0x0000003B: SYSTEM SERVICE EXCEPTION (klfltsdk.sys)</strong><br /><strong>STOP 0x0000007E: SYSTEM THREAD EXCEPTION NOT HANDLED (klfltsdk.sys)</strong><br /><strong>STOP 0x00000050: PAGE FAULT IN A NONPAGED AREA (klfltsdk.sys)</strong><br /><strong>STOP 0×0000007A: KERNEL DATA INPAGE (klfltsdk.sys)</strong><br /><strong>STOP 0x0000001E: KMODE EXCEPTION NOT HANDLED (klfltsdk.sys)</strong>

It's Critical to Resolve Blue Screen of Death Errors

In the majority of cases, you will encounter klfltsdk.sys BSOD errors after you've installed new hardware, software (ZoneAlarm Antivirus), or performed a failed Windows Update. In other cases, software corruption caused by a malware infection can lead to klfltsdk.sys Blue Screen of Death errors. Therefore, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.


GEEK TIP : As a rule of thumb, it's always a good idea to create a Windows "Snapshot" backup / System Restore Point before making any hardware or software changes to your computer. That way, it's very easy to restore your system in the unfortunate event you encounter a klfltsdk.sys Blue Screen of Death error after recent changes.

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How to Fix klfltsdk.sys Errors in 3 Steps (Time to complete: ~5-15 minutes)

If you're encountering one of the error messages above, follow these troubleshooting steps to resolve your klfltsdk.sys issue. These troubleshooting steps are listed in the recommended order of execution.


Step 1: Restore your PC back to the latest restore point, "snapshot", or backup image before error occurred.

To begin System Restore (Windows XP, Vista, 7, 8, and 10):

  1. Hit the Windows Start button
  2. When you see the search box, type "System Restore" and press "ENTER".
  3. In the search results, find and click System Restore.
  4. Please enter the administrator password (if applicable / prompted).
  5. Follow the steps in the System Restore Wizard to choose a relevant restore point.
  6. Restore your computer to that backup image.

If the Step 1 fails to resolve the klfltsdk.sys error, please proceed to the Step 2 below.

Step 2: If recently installed ZoneAlarm Antivirus (or related software), uninstall then try reinstalling ZoneAlarm Antivirus software.

You can uninstall ZoneAlarm Antivirus software by following these instructions (Windows XP, Vista, 7, 8, and 10):

  1. Hit the Windows Start button
  2. In the search box, type "Uninstall" and press "ENTER".
  3. In the search results, find and click "Add or Remove Programs"
  4. Find the entry for ZoneAlarm Antivirus 15.8.008.18174 and click "Uninstall"
  5. Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall ZoneAlarm Antivirus software.

If this Step 2 fails as well, please proceed to the Step 3 below.

ZoneAlarm Antivirus 15.8.008.18174

Check Point Software Technologies Ltd.

Step 3: Perform a Windows Update.

When the first two steps haven't solved your issue, it might be a good idea to run Windows Update. Many klfltsdk.sys error messages that are encountered can be contributed to an outdated Windows Operating System. To run Windows Update, please follow these easy steps:

  1. Hit the Windows Start button
  2. In the search box, type "Update" and press "ENTER".
  3. In the Windows Update dialog box, click "Check for Updates" (or similar button depending on your Windows version)
  4. If updates are available for download, click "Install Updates".
  5. After the update is completed, restart your PC.

If Windows Update failed to resolve the klfltsdk.sys error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.

Recommended Download (WinThruster): Optimize Your PC and Fix SYS File Association Errors.

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If Those Steps Fail: Download and Replace Your klfltsdk.sys File (Caution: Advanced)

If none of the previous three troubleshooting steps have resolved your issue, you can try a more aggressive approach (Note: Not recommended for amateur PC users) by downloading and replacing your appropriate klfltsdk.sys file version. We maintain a comprehensive database of 100% malware-free klfltsdk.sys files for every applicable version of ZoneAlarm Antivirus. Please follow the steps below to download and properly replace you file:

  1. Locate your Windows operating system version in the list of below "Download klfltsdk.sys Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy this file to the appropriate ZoneAlarm Antivirus folder location:
    Windows 10: C:\Program Files (x86)\CheckPoint\ZoneAlarm\avsys\install\instdrivers\mklif\fre_wlh_x86\
    Windows 10: C:\Windows\System32\drivers\
    Windows 10: C:\Program Files (x86)\CheckPoint\ZoneAlarm\avsys\install\instdrivers\mklif\fre_wlh_amd64\
  4. Restart your computer.

If this final step has failed and you're still encountering the error, you're only remaining option is to do a clean installation of Windows 10.


GEEK TIP : We must emphasize that reinstalling Windows will be a very time-consuming and advanced task to resolve klfltsdk.sys problems. To avoid data loss, you must be sure that you have backed-up all of your important documents, pictures, software installers, and other personal data before beginning the process. If you are not currently backing up your data, you need to do so immediately.

Recommended Download (WinThruster): Optimize Your PC and Fix SYS File Association Errors.

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Download klfltsdk.sys Files (Malware-Tested 100% Clean)


CAUTION : We strongly advise against downloading and copying klfltsdk.sys to your appropriate Windows system directory. Check Point Software Technologies Ltd. typically does not release ZoneAlarm Antivirus SYS files for download because they are bundled together inside of a software installer. The installer's task is to ensure that all correct verifications have been made before installing and placing klfltsdk.sys and all other SYS files for ZoneAlarm Antivirus. An incorrectly installed SYS file may create system instability and could cause your program or operating system to stop functioning altogether. Proceed with caution.

Windows 10
Recommended Download (WinThruster): Optimize Your PC and Fix SYS File Association Errors.

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Files Related to klfltsdk.sys


SYS Files Related to klfltsdk.sys

File Name Description Software Program (Version) File Size (bytes) File Location
klupd_klifsdk_kimul.sys Kernel heuristics engine Kaspersky Anti-Virus (6.0.1.990) 99152 C:\Program Files\WindowsApps\Microsoft.Reader_6...
klifsdk.sys Core System Interceptors [fre_win7_x64_sdk_noagava] Coretech Delivery (30.5.91.0) 1105536 C:\Program Files\WindowsApps\Microsoft.ZuneVide...
kl1.sys Updatable component loader [fre_win7_x64] Coretech Delivery (30.5.76.0) 531280 C:\Program Files\WindowsApps\Microsoft.ZuneVide...
vsdatant.sys ZoneAlarm ZoneAlarm (15.1.29.17237) 461240 C:\Program Files\WindowsApps\microsoft.windowsc...
klbackupflt.sys Backup File Filter [fre_win7_x64_sdk] Coretech Delivery (30.5.91.0) 133760 C:\Program Files\WindowsApps\Microsoft.ZuneVide...

Other Files Related to klfltsdk.sys

File Name Description Software Program (Version) File Size (bytes) File Location
Sessions.xml Extensible Markup Language ZoneAlarm Antivirus 15.8.008.18174 5814417 C:\Windows\servicing\Sessions\
CBS.log Log ZoneAlarm Antivirus 15.8.008.18174 552286 C:\Windows\Logs\CBS\
setupapi.dev.log Log ZoneAlarm Antivirus 15.8.008.18174 691145 C:\Windows\inf\
WmiApRpl.h C/C++/Objective-C Header ZoneAlarm Antivirus 15.8.008.18174 3444 C:\Windows\System32\wbem\Performance\
api-ms-win-core-profil... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.14393.33) 17600 C:\Program Files (x86)\CheckPoint\Install\


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