Downloading and Repairing K9filter.exe

Last Updated: 07/02/2022
[Time Required for Reading: 3.5 minutes]

K9filter.exe, also known as a K9 Web Protection Filter file, was created by Blue Coat Systems for the development of K9 Web Protection. EXE files fall under under the Win64 EXE (Executable application) file type category.

The first version of k9filter.exe was released for the Windows 10 Operating System on 07/15/2014 inside K9 Web Protection 4.4.276. This is not only most recent release from Blue Coat Systems, but it's the only version known in existence.

This article discusses complete file details, EXE file troubleshooting instructions for problems with k9filter.exe, and a comprehensive set of free downloads for every file version that has been catalogued by our team.

File Analysis Provided by Jason Geater (Author)

Recommended Download: Fix k9filter.exe / K9 Web Protection-related registry issues with WinThruster.

Compatible with Windows 10, 8, 7, Vista, XP and 2000

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File Overview

General Information
File Name: k9filter.exe
File Extension: EXE file extension
Description: K9 Web Protection Filter
Object File Type: Executable application
File Operating System: Win32
MIME Type: application/octet-stream
User Popularity Rating:
Developer and Software Information
Software Developer: Blue Coat Systems, Inc.
Software Program: K9 Web Protection
Legal Copyright: Copyright (C) 2006 - 2010 Blue Coat Systems, Inc.
File Details
Character Set: Unicode
Language Code: English (U.S.)
File Flags: (none)
File Flags Mask: 0x0017
Entry Point: 0x98ff0
Code Size: 909824

What are k9filter.exe Error Messages?

k9filter.exe Runtime Errors

Runtime errors are K9 Web Protection errors that occur during "runtime". Runtime is pretty self-explanatory; it means that these EXE errors are triggered when k9filter.exe is attempted to be loaded either when K9 Web Protection is starting up, or in some cases already running. Runtime errors are the most common form of EXE error you will encounter using K9 Web Protection.

In most cases, k9filter.exe runtime errors occurring while the program is running will result in the program terminating abnormally. Most of these k9filter.exe error messages mean that K9 Web Protection was either unable to locate this file on startup, or the file is corrupt, resulting in a prematurely-aborted startup process. Generally, K9 Web Protection will be unable to start without resolving these errors.

Some of the most common k9filter.exe errors include:

  • k9filter.exe - Bad Image.
  • k9filter.exe Application Error.
  • k9filter.exe could not be found.
  • k9filter.exe could not be installed.
  • k9filter.exe could not be launched. Class not registered.
  • k9filter.exe could not be started.
  • k9filter.exe failed to initialize properly.
  • k9filter.exe has encountered a problem and needs to close. We are sorry for the inconvenience.
  • k9filter.exe is not a valid Win32 application.
  • k9filter.exe is not running.
  • Cannot find k9filter.exe.
  • Error starting program: k9filter.exe.
  • Faulting Application Path: k9filter.exe.
  • The file k9filter.exe is missing or corrupt.
  • Windows failed to start - k9filter.exe.
System Error

The program can’t start because k9filter.exe is missing from your computer. Try reinstalling the program to fix this problem.

Thus, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.

Finding the source of the k9filter.exe error is key to properly resolving these errors. Although most of these EXE errors affecting k9filter.exe will happen during startup, occasionally you will encounter a runtime error while using K9 Web Protection. This can occur due to poor programming on behalf of Blue Coat Systems, Inc., conflicts with other software or 3rd-party plug-ins, or caused by damaged and outdated hardware. Also, these types of k9filter.exe errors can occur if it has been accidentally moved, deleted, or corrupted by a malware infection. Thus, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.

How to Fix k9filter.exe 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 k9filter.exe 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 k9filter.exe error, please proceed to the Step 2 below.

Step 2: If recently installed K9 Web Protection (or related software), uninstall then try reinstalling K9 Web Protection software.

You can uninstall K9 Web Protection 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 K9 Web Protection 4.4.276 and click "Uninstall"
  5. Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall K9 Web Protection software.

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

K9 Web Protection 4.4.276

Blue Coat Systems

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 k9filter.exe 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 k9filter.exe error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.

If Those Steps Fail: Download and Replace Your k9filter.exe 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 k9filter.exe file version. We maintain a comprehensive database of 100% malware-free k9filter.exe files for every applicable version of K9 Web Protection. 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 k9filter.exe Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy this file to the appropriate K9 Web Protection folder location:
    Windows 10: C:\Program Files\Blue Coat K9 Web Protection\
  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 k9filter.exe 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.

Download k9filter.exe Files (Malware-Tested 100% Clean)

CAUTION : We strongly advise against downloading and copying k9filter.exe to your appropriate Windows system directory. Blue Coat Systems typically does not release K9 Web Protection EXE 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 k9filter.exe and all other EXE files for K9 Web Protection. An incorrectly installed EXE file may create system instability and could cause your program or operating system to stop functioning altogether. Proceed with caution.

Windows 10

Files Related to k9filter.exe

EXE Files Related to k9filter.exe

File Name Description Software Program (Version) File Size (bytes) File Location
k9-webprotection-4.2.8... Windows Executable K9 Web Protection 4.4.276 2869288 C:\Users\Tester\Downloads\
OneDriveStandaloneUpda... Standalone Updater Microsoft OneDrive (19.192.0926.0012) 2712936 C:\Users\Tester\AppData\Local\Microsoft\OneDrive\
OneDriveUpdaterService... Updater Service Microsoft OneDrive (19.192.0926.0012) 2487144 C:\Users\Tester\AppData\Local\Microsoft\OneDriv...
OneDriveSetup.exe Microsoft OneDrive (32 bit) Setup Microsoft OneDrive (19.192.0926.0012) 35086184 C:\Users\Tester\AppData\Local\Microsoft\OneDriv...
FileSyncConfig.exe Microsoft OneDrive Configuration Application Microsoft OneDrive (19.192.0926.0012) 364392 C:\Users\Tester\AppData\Local\Microsoft\OneDriv...

Other Files Related to k9filter.exe

File Name Description Software Program (Version) File Size (bytes) File Location
setupact.log Log K9 Web Protection 4.4.276 189618 C:\Windows\Logs\DPX\
setupact.log Log K9 Web Protection 4.4.276 18217 C:\Windows\System32\Sysprep\Panther\
SA.DAT Game Data K9 Web Protection 4.4.276 6 C:\WINDOWS\Tasks\ Log K9 Web Protection 4.4.276 684126 C:\Windows\inf\
WmiApRpl.ini Windows Initialization K9 Web Protection 4.4.276 29736 C:\Windows\inf\WmiApRpl\0009\


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