The Wireshark Team Wireshark EXE NPFInstall.exe

Download NPFInstall.exe and Troubleshoot Runtime Errors

Last Updated: 11/28/2023
[Reading Time Required: 3.5 minutes]

EXE files such as NPFInstall.exe are categorized as Win64 EXE (Dynamic link library) files. As a A LWF & WFP driver installation tool file, it was created for use in Npcap by The Wireshark Team.

The first version of NPFInstall.exe was released for the Windows 10 Operating System on 02/28/2019 inside Wireshark 3.0.0. This file release marks the latest and most updated version from The Wireshark Team.

Below, you find comprehensive file information, instructions for simple EXE file troubleshooting, and list of free NPFInstall.exe downloads for each available file version.

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File Overview


General Information ✻
File Name: NPFInstall.exe
File Extension: EXE file extension
Description: A LWF & WFP driver installation tool
Object File Type: Dynamic link library
File Operating System: Win32
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: 0x0017
Entry Point: 0x10c18
Code Size: 140800
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What are NPFInstall.exe Error Messages?


NPFInstall.exe Runtime Errors

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

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

Some of the most common NPFInstall.exe errors include:

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


The program can’t start because NPFInstall.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 NPFInstall.exe error is key to properly resolving these errors. Although most of these EXE errors affecting NPFInstall.exe will happen during startup, occasionally you will encounter a runtime error while using Npcap. This can occur due to poor programming on behalf of Insecure.Com LLC., conflicts with other software or 3rd-party plug-ins, or caused by damaged and outdated hardware. Also, these types of NPFInstall.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.

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How to Fix NPFInstall.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 NPFInstall.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 NPFInstall.exe 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 NPFInstall.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 NPFInstall.exe 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 NPFInstall.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 NPFInstall.exe file version. We maintain a comprehensive database of 100% malware-free NPFInstall.exe 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 NPFInstall.exe 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:\Program Files\Npcap\
  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 NPFInstall.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.

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


CAUTION : We strongly advise against downloading and copying NPFInstall.exe to your appropriate Windows system directory. The Wireshark Team typically does not release Wireshark 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 NPFInstall.exe and all other EXE files for Wireshark. 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
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Files Related to NPFInstall.exe


EXE Files Related to NPFInstall.exe

File Name Description Software Program (Version) File Size (bytes) File Location
Music.UI.exe Music Application Entertainment Platform (10.19101.107100000-19101) 23313408 C:\Windows\Panther\
FileSyncHelper.exe Microsoft OneDriveFileSyncHelper Microsoft OneDrive (19.192.0926.0012) 2133352 C:\Users\Bill\AppData\Local\
FileSyncConfig.exe Microsoft OneDrive Configuration Application Microsoft OneDrive (19.192.0926.0012) 364392 C:\Users\Tester\AppData\Local\Microsoft\Windows\
GetHelp.exe Windows Executable Wireshark 3.0.0 18432 C:\Program Files\Common Files\Microsoft Shared\...
WlanHelper.exe A tool for wireless adapter settings Npcap (0.99-r9) 74552 C:\Windows\Temp\527D94AF-D053-4381-B105-0D815D5...

Other Files Related to NPFInstall.exe

File Name Description Software Program (Version) File Size (bytes) File Location
setupact.log Log Wireshark 3.0.0 1304398 C:\Windows\Panther\NewOs\Panther\
setupact.log Log Wireshark 3.0.0 62521 C:\Windows\Panther\UnattendGC\
diagerr.xml Extensible Markup Language Wireshark 3.0.0 5718 C:\Windows\System32\Sysprep\Panther\
diagerr.xml Extensible Markup Language Wireshark 3.0.0 24420 C:\Windows\Panther\NewOs\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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