Fortinet FortiClient SYS FortiFilter.sys

Troubleshoot FortiFilter.sys Issues (Free Download)

Last Updated: 11/24/2023
[Time Required for Reading: 3.5 minutes]

FortiClient NDIS 6.3 Packet Filter Driver files, such as FortiFilter.sys, are considered a type of Win64 EXE (Driver) file. They are associated with the SYS file extension, developed by Fortinet for FortiClient NDIS filter driver.

The initial introduction of FortiFilter.sys released in FortiClient 5.0.5 was for Windows 10 on 08/08/2013. This is the most recent release date from Fortinet, according to our records.

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

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File Overview


General Information ✻
File Name: FortiFilter.sys
File Extension: SYS file extension
Description: FortiClient NDIS 6.3 Packet Filter Driver
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: Fortinet Inc
Software Program: FortiClient NDIS filter driver
Legal Copyright: © Fortinet Corporation. All rights reserved.
File Details
Character Set: Unicode
Language Code: Neutral
File Flags: Private build
File Flags Mask: 0x003f
Entry Point: 0x3198
Code Size: 12800
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What are FortiFilter.sys Error Messages?


FortiFilter.sys Blue Screen of Death (BSOD) Errors

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 These types of FortiFilter.sys errors can be cause by hardware problems, outdated firmware, corrupt drivers, or other software-related (eg.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

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

It's Critical to Resolve Blue Screen of Death Errors

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

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

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

You can uninstall FortiClient 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 FortiClient 5.0.5 and click "Uninstall"
  5. Follow the prompts for uninstallation.

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

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

FortiClient 5.0.5

Fortinet

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 FortiFilter.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 FortiFilter.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 FortiFilter.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 FortiFilter.sys file version. We maintain a comprehensive database of 100% malware-free FortiFilter.sys files for every applicable version of FortiClient. 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 FortiFilter.sys Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy this file to the appropriate FortiClient folder location:
    Windows 10: C:\Windows\System32\drivers\
    Windows 10: C:\Program Files\Common Files\Fortinet\FortiClient\FortiFilter\
    Windows 10: C:\Windows\System32\DriverStore\FileRepository\fortifilter.inf_amd64_283aeda6f10114be\
  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 FortiFilter.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.

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


CAUTION : We strongly advise against downloading and copying FortiFilter.sys to your appropriate Windows system directory. Fortinet typically does not release FortiClient 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 FortiFilter.sys and all other SYS files for FortiClient. 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
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Files Related to FortiFilter.sys


SYS Files Related to FortiFilter.sys

File Name Description Software Program (Version) File Size (bytes) File Location
fortielam.sys FortiElam Fortinet FortiClient (6.2.0.0700) 20320 C:\Windows\Temp\527D94AF-D053-4381-B105-0D815D5...
FortiAptFilter.sys FortiClient Apt Filter Driver Fortinet FortiClient (6.2.3.0912) 63312 C:\Windows\System32\fr-FR\
fortiloader.sys FortiClient Fortiloader Driver Fortinet FortiClient (6.2.3.0912) 21840 C:\Windows\System32\sl-SI\
fortiwf2.sys FortiClient Web Filter Driver Fortinet FortiClient (6.2.3.0912) 52560 C:\Windows\System32\ru-RU\
fortiapd.sys FortiClient application DB Driver Fortinet FortiClient (6.2.3.0912) 27472 C:\Windows\System32\pt-PT\

Other Files Related to FortiFilter.sys

File Name Description Software Program (Version) File Size (bytes) File Location
api-ms-win-core-profil... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.17134.12) 10600 C:\Users\Tester\AppData\Local\Microsoft\OneDriv...
api-ms-win-core-synch-... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.10586.15) 21376 C:\Program Files\Fortinet\FortiClient\
api-ms-win-core-memory... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.10586.15) 19848 C:\Program Files\Fortinet\FortiClient\x86\
api-ms-win-core-debug-... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.10586.15) 19328 C:\Program Files\Fortinet\FortiClient\x86\
ShutdownPerformanceDia... Binary Disk Image FortiClient 5.0.5 9694 C:\Windows\System32\wdi\


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