ESET ESET Nod32 Antivirus SYS EpfwLwf.sys

Fix EpfwLwf.sys Errors and Download Now

Last Updated: 11/26/2023
[Time Needed for Reading: ~4-6 minutes]

SYS files such as EpfwLwf.sys are categorized as Win64 EXE (Driver) files. As a Epfw NDIS LightWeight Filter file, it was created for use in ESET Security by ESET.

The first version of EpfwLwf.sys was released for the Windows 10 Operating System on 10/03/2019 inside ESET Nod32 Antivirus 12.2.30.0. This file version is latest update offered from ESET, according to our records.

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

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File Overview


General Information ✻
File Name: EpfwLwf.sys
File Extension: SYS file extension
Description: Epfw NDIS LightWeight Filter
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: ESET
Software Program: ESET Security
Legal Copyright: Copyright (c) ESET, spol. s r.o. 1992-2019. All rights reserved.
File Details
Character Set: Windows, Latin1
Language Code: English (U.S.)
File Flags: (none)
File Flags Mask: 0x003f
Entry Point: 0xaa60
Code Size: 26624
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What are EpfwLwf.sys Error Messages?


EpfwLwf.sys Blue Screen of Death (BSOD) Errors

There are a number of reasons why you could be encountering issues with EpfwLwf.sys. Most of the issues concerning sys files involve Blue Screen of Death (BSOD) errors. These types of EpfwLwf.sys errors can be cause by hardware problems, outdated firmware, corrupt drivers, or other software-related (eg. ESET Nod32 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: EpfwLwf.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] (EpfwLwf.sys).

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

It's Critical to Resolve Blue Screen of Death Errors

In the majority of cases, you will encounter EpfwLwf.sys BSOD errors after you've installed new hardware, software (ESET Nod32 Antivirus), or performed a failed Windows Update. In other cases, software corruption caused by a malware infection can lead to EpfwLwf.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 EpfwLwf.sys Blue Screen of Death error after recent changes.

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

Step 2: If recently installed ESET Nod32 Antivirus (or related software), uninstall then try reinstalling ESET Nod32 Antivirus software.

You can uninstall ESET Nod32 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 ESET Nod32 Antivirus 12.2.30.0 and click "Uninstall"
  5. Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall ESET Nod32 Antivirus software.

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

ESET Nod32 Antivirus 12.2.30.0

ESET

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 EpfwLwf.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 EpfwLwf.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 EpfwLwf.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 EpfwLwf.sys file version. We maintain a comprehensive database of 100% malware-free EpfwLwf.sys files for every applicable version of ESET Nod32 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 EpfwLwf.sys Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy this file to the appropriate ESET Nod32 Antivirus folder location:
    Windows 10: C:\Program Files\ESET\ESET Security\Drivers\epfwlwf\
  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 EpfwLwf.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 EpfwLwf.sys Files (Malware-Tested 100% Clean)


CAUTION : We strongly advise against downloading and copying EpfwLwf.sys to your appropriate Windows system directory. ESET typically does not release ESET Nod32 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 EpfwLwf.sys and all other SYS files for ESET Nod32 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 EpfwLwf.sys


SYS Files Related to EpfwLwf.sys

File Name Description Software Program (Version) File Size (bytes) File Location
epfw.sys ESET Firewall Driver ESET Security (13.0.23.0) 79744 C:\Windows\Prefetch\
eelam.sys ESET ELAM driver ESET Security (10.0.9.0) 15800 C:\Windows\Prefetch\
edevmon.sys Devmon monitor ESET Security (13.0.6.0) 103264 C:\Windows\Prefetch\
ekbdflt.sys ESET OPP Keyboard Filter ESET Security (13.0.6.0) 50712 C:\Windows\Prefetch\
NXQuery.sys NX Support Check Microsoft® Windows® Operating System (10.0.18362.1) 16024 C:\Users\Tester\AppData\Local\Packages\Microsof...

Other Files Related to EpfwLwf.sys

File Name Description Software Program (Version) File Size (bytes) File Location
symbol.ttf TrueType Font ESET Nod32 Antivirus 12.2.30.0 70128 C:\Program Files\WindowsApps\microsoft.windowsc...
setupact.log Log ESET Nod32 Antivirus 12.2.30.0 217171 C:\Windows\Logs\DPX\
SA.DAT Game Data ESET Nod32 Antivirus 12.2.30.0 6 C:\WINDOWS\Tasks\
api-ms-win-core-heap-l... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.18362.1) 12232 C:\Program Files\ESET\ESET Security\
api-ms-win-core-heap-l... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.17134.12) 11112 C:\Users\Tester\AppData\Local\Microsoft\OneDriv...


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