Bcmnpf64.sys - Download and Fix Blue Screen Errors

Last Updated: 07/04/2022
[Time to Read: ~3-5 minutes]

Bcmnpf64.sys, also known as a npf file, was created by Acer Inc. for the development of WinPcap Netgroup Packet Filter Driver. SYS files fall under under the Win64 EXE (Driver) file type category.

The first version of Bcmnpf64.sys was released for the Windows 10 Operating System on 06/25/2006 inside WLan Driver 802.11n Rel. According to our records, this is the primary and most recent file release from Acer Inc..

Please continue reading to find your correct Bcmnpf64.sys file version download (free), detailed file information, and SYS file troubleshooting instructions.

File Analysis Provided by Jason Geater (Author)

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File Overview

General Information
File Name: Bcmnpf64.sys
File Extension: SYS file extension
Description: npf
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: NetGroup - Politecnico di Torino
Software Program: WinPcap Netgroup Packet Filter Driver
Legal Copyright: Copyright © 1999-2004
File Details
Character Set: Unicode
Language Code: Neutral
File Flags: (none)
File Flags Mask: 0x003f
Entry Point: 0x2100
Code Size: 30208

What are Bcmnpf64.sys Error Messages?

Bcmnpf64.sys Blue Screen of Death (BSOD) Errors

There are a number of reasons why you could be encountering issues with Bcmnpf64.sys. Most of the issues concerning SYS files involve Blue Screen of Death (BSOD) errors. These types of Bcmnpf64.sys errors can be cause by hardware problems, outdated firmware, corrupt drivers, or other software-related (eg. WLan Driver 802.11n Rel. 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: Bcmnpf64.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] (Bcmnpf64.sys).

STOP 0x0000003B: SYSTEM SERVICE EXCEPTION (Bcmnpf64.sys)
STOP 0×0000007A: KERNEL DATA INPAGE (Bcmnpf64.sys)
STOP 0x0000000A: IRQL NOT LESS EQUAL (Bcmnpf64.sys)
STOP 0x00000050: PAGE FAULT IN A NONPAGED AREA (Bcmnpf64.sys)

It's Critical to Resolve Blue Screen of Death Errors

In the majority of cases, you will encounter Bcmnpf64.sys BSOD errors after you've installed new hardware, software (WLan Driver 802.11n Rel., or performed a failed Windows Update. In other cases, software corruption caused by a malware infection can lead to Bcmnpf64.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 Bcmnpf64.sys Blue Screen of Death error after recent changes.

How to Fix Bcmnpf64.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 Bcmnpf64.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 Bcmnpf64.sys error, please proceed to the Step 2 below.

Step 2: If recently installed WLan Driver 802.11n Rel. (or related software), uninstall then try reinstalling WLan Driver 802.11n Rel. software.

You can uninstall WLan Driver 802.11n Rel. 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 WLan Driver 802.11n Rel. and click "Uninstall"
  5. Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall WLan Driver 802.11n Rel. software.

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

WLan Driver 802.11n Rel.

Acer Inc.

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 Bcmnpf64.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 Bcmnpf64.sys 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 Bcmnpf64.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 Bcmnpf64.sys file version. We maintain a comprehensive database of 100% malware-free Bcmnpf64.sys files for every applicable version of WLan Driver 802.11n Rel. 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 Bcmnpf64.sys Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy this file to the appropriate WLan Driver 802.11n Rel. folder location:
    Windows 10: C:\Program Files (x86)\Broadcom\WirelessBCM MIMO\Driver\
  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 Bcmnpf64.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.

Download Bcmnpf64.sys Files (Malware-Tested 100% Clean)

CAUTION : We strongly advise against downloading and copying Bcmnpf64.sys to your appropriate Windows system directory. Acer Inc. typically does not release WLan Driver 802.11n Rel. 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 Bcmnpf64.sys and all other SYS files for WLan Driver 802.11n Rel. 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

Files Related to Bcmnpf64.sys

SYS Files Related to Bcmnpf64.sys

File Name Description Software Program (Version) File Size (bytes) File Location
bcmwl5.sys Broadcom 802.11 Network Adapter wireless driver Broadcom 802.11 Network Adapter wireless driver ( 564224 C:\Windows\SysWOW64\drivers\
Bcmnpf64.sys npf WinPcap Netgroup Packet Filter Driver (3, 1, 0, 24) 36352 C:\Program Files (x86)\Broadcom\WirelessBCM MIM...
bcmwl564.sys Broadcom 802.11 Network Adapter wireless driver Broadcom 802.11 Network Adapter wireless driver ( 701952 C:\Program Files (x86)\Broadcom\WirelessBCM MIM...

Other Files Related to Bcmnpf64.sys

File Name Description Software Program (Version) File Size (bytes) File Location
setupact.log Log WLan Driver 802.11n Rel. 24012 C:\Windows\System32\Sysprep\Panther\
setupapi.dev.log Log WLan Driver 802.11n Rel. 693894 C:\Windows\inf\
diagwrn.xml Extensible Markup Language WLan Driver 802.11n Rel. 44683 C:\Windows\Panther\UnattendGC\
api-ms-win-core-memory... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.17134.12) 18752 C:\Users\Tester\AppData\Local\Microsoft\OneDriv...
EtwRTEventLog-Applicat... Microsoft Event Trace Log WLan Driver 802.11n Rel. 1744 C:\Windows\System32\LogFiles\WMI\RtBackup\


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