ZoneAlarm ZoneAlarm Pro Antivirus+Firewall 2019 SYS kltdi.sys

Fixing Kltdi.sys Issues - How to Download and Repair

Last Updated: 11/24/2023
[Time to Read: ~3-5 minutes]

kltdi.sys is considered a type of Legacy Network Filter [fre_wnet_x86] file. It is most-commonly used in System Interceptors PDK developed by ZoneAlarm. It uses the SYS file extension and is considered a Win32 EXE (Driver) file.

kltdi.sys was first released in the Windows 10 Operating System on 04/30/2019 with ZoneAlarm Pro Antivirus+Firewall 2019 15.6.028.18012. This is the most recent release date from ZoneAlarm, according to our records.

Please see below for more detailed information, SYS file troubleshooting instructions, and free downloads of different versions of kltdi.sys.

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File Overview


General Information ✻
File Name: kltdi.sys
File Extension: SYS file extension
Description: Legacy Network Filter [fre_wnet_x86]
Object File Type: Driver
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: System Interceptors PDK
Legal Copyright: © 2016 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: 0xd000
Code Size: 36352
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What are kltdi.sys Error Messages?


kltdi.sys Blue Screen of Death (BSOD) Errors

There are a number of reasons why you could be encountering issues with kltdi.sys. Most of the issues concerning sys files involve Blue Screen of Death (BSOD) errors. These types of kltdi.sys errors can be cause by hardware problems, outdated firmware, corrupt drivers, or other software-related (eg. ZoneAlarm Pro Antivirus+Firewall 2019 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: kltdi.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] (kltdi.sys).

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

It's Critical to Resolve Blue Screen of Death Errors

In the majority of cases, you will encounter kltdi.sys BSOD errors after you've installed new hardware, software (ZoneAlarm Pro Antivirus+Firewall 2019), or performed a failed Windows Update. In other cases, software corruption caused by a malware infection can lead to kltdi.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 kltdi.sys Blue Screen of Death error after recent changes.

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How to Fix kltdi.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 kltdi.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 kltdi.sys error, please proceed to the Step 2 below.

Step 2: If recently installed ZoneAlarm Pro Antivirus+Firewall 2019 (or related software), uninstall then try reinstalling ZoneAlarm Pro Antivirus+Firewall 2019 software.

You can uninstall ZoneAlarm Pro Antivirus+Firewall 2019 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 Pro Antivirus+Firewall 2019 15.6.028.18012 and click "Uninstall"
  5. Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall ZoneAlarm Pro Antivirus+Firewall 2019 software.

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

ZoneAlarm Pro Antivirus+Firewall 2019 15.6.028.18012

ZoneAlarm

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 kltdi.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 kltdi.sys error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.

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If Those Steps Fail: Download and Replace Your kltdi.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 kltdi.sys file version. We maintain a comprehensive database of 100% malware-free kltdi.sys files for every applicable version of ZoneAlarm Pro Antivirus+Firewall 2019. 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 kltdi.sys Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy this file to the appropriate ZoneAlarm Pro Antivirus+Firewall 2019 folder location:
    Windows 10: C:\Program Files (x86)\CheckPoint\ZoneAlarm\avsys\install\instdrivers\kl1\x86\
    Windows 10: C:\Program Files (x86)\CheckPoint\ZoneAlarm\avsys\install\instdrivers\kl1\x64\
  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 kltdi.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 kltdi.sys Files (Malware-Tested 100% Clean)


CAUTION : We strongly advise against downloading and copying kltdi.sys to your appropriate Windows system directory. ZoneAlarm typically does not release ZoneAlarm Pro Antivirus+Firewall 2019 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 kltdi.sys and all other SYS files for ZoneAlarm Pro Antivirus+Firewall 2019. 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 kltdi.sys


SYS Files Related to kltdi.sys

File Name Description Software Program (Version) File Size (bytes) File Location
klflt.sys Filter Core [fre_wnet_x86_sdk_noagava] System Interceptors PDK (16.1.7.0) 177352 C:\Windows\ServiceProfiles\NetworkService\AppDa...
klhk.sys klhk [fre_win8_x86] System Interceptors PDK (16.0.58.62) 658624 C:\Program Files\WindowsApps\Microsoft.ZuneVide...
klim5.sys Legacy Packet Network Filter [fre_wnet_x86] System Interceptors PDK (14.0.0.2) 54744 C:\Windows\Temp\
klif.sys Core System Interceptors [fre_win8_x64_sdk_noagava] System Interceptors PDK (16.1.18.0) 1086656 C:\Windows\ServiceProfiles\NetworkService\AppDa...
klflt.sys Filter Core [fre_wlh_x64_sdk_noagava] System Interceptors PDK (16.1.7.0) 219328 C:\Windows\ServiceProfiles\NetworkService\AppDa...

Other Files Related to kltdi.sys

File Name Description Software Program (Version) File Size (bytes) File Location
diagwrn.xml Extensible Markup Language ZoneAlarm Pro Antivirus+Firewall 2019 15.6.028.18012 44683 C:\Windows\Panther\UnattendGC\
diagerr.xml Extensible Markup Language ZoneAlarm Pro Antivirus+Firewall 2019 15.6.028.18012 5718 C:\Windows\System32\Sysprep\Panther\
api-ms-win-core-synch-... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.14393.33) 20160 C:\Program Files (x86)\CheckPoint\Install\
api-ms-win-core-synch-... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.10586.212) 20672 C:\Program Files (x86)\CheckPoint\ZoneAlarm\avsys\
api-ms-win-core-dateti... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.14393.33) 17600 C:\Program Files (x86)\CheckPoint\Install\


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