The Wireshark Team Wireshark SYS npcap.sys

Download Npcap.sys and Fix Blue Screen Errors

Last Updated: 11/24/2023
[Time to Read Article: 5 minutes]

npcap.sys is considered a type of npcap.sys (NT6 AMD64) Kernel Filter Driver file. It is most-commonly used in Npcap developed by The Wireshark Team. It uses the SYS file extension and is considered a Win64 EXE (Driver) file.

npcap.sys was first released in the Windows 10 Operating System on 02/28/2019 with Wireshark 3.0.0. According to our records, this is the primary and most recent file release from The Wireshark Team.

Below, you find comprehensive file information, instructions for simple SYS file troubleshooting, and list of free npcap.sys downloads for each available file version.

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File Overview


General Information ✻
File Name: npcap.sys
File Extension: SYS file extension
Description: npcap.sys (NT6 AMD64) Kernel 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: Insecure.Com LLC.
Software Program: Npcap
Legal Copyright: Copyright (c) 2019, Insecure.Com LLC. All rights reserved.
File Details
Character Set: Unicode
Language Code: Neutral
File Flags: (none)
File Flags Mask: 0x003f
Entry Point: 0x11418
Code Size: 42496
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What are npcap.sys Error Messages?


npcap.sys Blue Screen of Death (BSOD) Errors

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 These types of npcap.sys errors can be cause by hardware problems, outdated firmware, corrupt drivers, or other software-related (eg.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

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

It's Critical to Resolve Blue Screen of Death Errors

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

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

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

You can uninstall Wireshark 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 Wireshark 3.0.0 and click "Uninstall"
  5. Follow the prompts for uninstallation.

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

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

Wireshark 3.0.0

The Wireshark Team

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 npcap.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 npcap.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 npcap.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 npcap.sys file version. We maintain a comprehensive database of 100% malware-free npcap.sys files for every applicable version of Wireshark. 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 npcap.sys Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy this file to the appropriate Wireshark folder location:
    Windows 10: C:\Windows\System32\drivers\
    Windows 10: C:\Program Files\Npcap\
    Windows 10: C:\Windows\System32\DriverStore\FileRepository\npcap.inf_amd64_1f5a6651c9d9ae72\
  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 npcap.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 npcap.sys Files (Malware-Tested 100% Clean)


CAUTION : We strongly advise against downloading and copying npcap.sys to your appropriate Windows system directory. The Wireshark Team typically does not release Wireshark 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 npcap.sys and all other SYS files for Wireshark. 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 npcap.sys


SYS Files Related to npcap.sys

File Name Description Software Program (Version) File Size (bytes) File Location
npcap.sys npcap.sys (NT6 AMD64) Kernel Filter Driver Npcap (0.99-r9) 82752 C:\Windows\Temp\527D94AF-D053-4381-B105-0D815D5...

Other Files Related to npcap.sys

File Name Description Software Program (Version) File Size (bytes) File Location
diagwrn.xml Extensible Markup Language Wireshark 3.0.0 5718 C:\Windows\System32\Sysprep\Panther\
diagwrn.xml Extensible Markup Language Wireshark 3.0.0 93050 C:\Windows\Panther\NewOs\Panther\
diagwrn.xml Extensible Markup Language Wireshark 3.0.0 44683 C:\Windows\Panther\UnattendGC\
diagerr.xml Extensible Markup Language Wireshark 3.0.0 5718 C:\Windows\System32\Sysprep\Panther\
api-ms-win-core-memory... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.17134.12) 11624 C:\Users\Tester\AppData\Local\Microsoft\OneDriv...


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