How to Download and Fix AuthFWSnapin.dll?

Sometimes Windows system displays error messages regarding corrupted or missing AuthFWSnapin.dll files. Situations like that can occur, for example, during a software installation process. Each software program requires certain resources, libraries, and source data to work properly. Corrupted or nonexistent AuthFWSnapin.dll file can therefore effect in failed execution of the started process.

AuthFWSnapin.dll file Microsoft.WindowsFirewall.SnapIn. The file was developed by for use with software. Here you will find detailed information about the file and instructions how to proceed in the event of AuthFWSnapin.dll related errors on your device. You can also download AuthFWSnapin.dll file compatible with Windows 10, Windows 8.1, Windows 8, Windows 7, Windows 7, Windows Vista, Windows Vista devices which will (most probably) allow you to solve the problem.

For Windows Compatible with: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows 7, Windows Vista, Windows Vista

File info

General information
Filename AuthFWSnapin.dll
File extension DLL
Description Microsoft.WindowsFirewall.SnapIn
Program Microsoft (R) Windows (R) Operating System
Author Microsoft Corporation
MIME type application/octet-stream
File type Dynamic link library
System Win32
Copyrights Copyright (c) Microsoft Corporation. All rights reserved.
Character set Unicode
Comments Windows Firewall with Advanced Security Snap-in

There are various types of errors related to AuthFWSnapin.dll file. AuthFWSnapin.dll file may be located in wrong file directory on your device, may not be present in the system, or may be infected with malicious software and therefore not work correctly. Below is a list of most common error messages related to AuthFWSnapin.dll file. If you encounter one listed below (or similar), please consider the following suggestions.

  • AuthFWSnapin.dll is corrupted
  • AuthFWSnapin.dll cannot be located
  • Runtime Error - AuthFWSnapin.dll
  • AuthFWSnapin.dll file error
  • AuthFWSnapin.dll file cannot be loaded. Module was not found
  • cannot register AuthFWSnapin.dll file:
  • AuthFWSnapin.dll file could not be loaded
  • AuthFWSnapin.dll file doesn't exist



Application could not be started because AuthFWSnapin.dll file is missing. Reinstall the application to solve the problem.


Problems related to AuthFWSnapin.dll can be addressed in various ways. Some methods are meant only for advanced users. If you don't have confidence in your skills, we suggest consulting a specialist. Fixing AuthFWSnapin.dll file errors should be approached with utmost caution for any mistakes can result in unstable or unproperly working system. If you have the necassary skills, please proceed.

AuthFWSnapin.dll file errors can be caused by various factors, so its is beneficial to try to fix them using various methods.

Step 1: Scan your computer for any malicious software

Virus Scan

Windows files are commonly attacked by malicious software that prevents them from working properly. First step in addressing problems with AuthFWSnapin.dll file or any other Windows system files should be scanning the system for malicious software using an antivirus tool.

If by any chance you don't have any antivirus software installed on your system yet, you should do it immediately. Unprotected system is not only a source of file errors, but, more importantly, makes your system vulnerable to many dangers. If you don't know which antivirus tool to choose, consult this Wikipedia article – comparison of antivirus software.

Step 2: Update your system and drivers.

Windows Update

Installing relevant Microsoft Windows patches and updates may solve your problems related to AuthFWSnapin.dll file. Use dedicated Windows tool to perform the update.

  1. Go to the Windows "Start" menu
  2. Type "Windows Update" in the search field
  3. Choose the appropriate software program (name may vary depending on your system version)
  4. Check if your system is up to date. If any unapplied updates are listed, install them immediately.
  5. After the update has been done,restart your computer in order to complete the process.

Beside updating the system, it is recommended that you install latest device drivers, as drivers can influence proper working of AuthFWSnapin.dll or other system files. In order to do so, go to your computer or device producer's website where you will find information regarding latest driver updates.

Step 3: Use System File Checker (SFC) tool

System File Checker

System File Checker is a Microsoft Windows tool. As the name suggests, the tool is used for identyfing and addressing system file related errors, including those related to AuthFWSnapin.dll file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the AuthFWSnapin.dll file with properly working version. To use the tool:

  1. Go to the Windows "Start" menu
  2. Type "cmd" in the search field
  3. Locate "Command Prompt" result – don't run it yet:
  4. Click the right mouse button and select "Run as Administrator" option
  5. Type "sfc /scannow" in console prompt to start the program and follow the instructions

Step 4: Restoring Windows system

Windows Recovery

Another approach is to restore system to previous state, before the AuthFWSnapin.dll file error occured. In order to restore your system, follow the instructions below

  1. Go to the Windows "Start" menu
  2. Type "System Restore" in the search field
  3. Start the system restore tool – it's name may differ depending on version of the system
  4. The application will guide you through the process – read the messages carefully
  5. After the process has finished, restart your computer.

If all the above-mentioned methods failed and the AuthFWSnapin.dll file problem has not been resolved, proceed to the next step. Remember that the following steps are intended only for advanced users.

Download and replace AuthFWSnapin.dll file

The last solution is to manually download and replace AuthFWSnapin.dll file in appropriate folder on the disk. Select file version compatible with your operating system and click the "Download" button. Next, go to your web browser's "Downloaded" folder and copy the downloaded AuthFWSnapin.dll file.

Go to the folder where the file should be located and paste the downloaded file. Below is the list of AuthFWSnapin.dll file example directory paths.

  • Windows 10: C:\Windows\System32\
  • Windows 8.1: C:\Windows\System32\
  • Windows 8: 1: C:\Windows\System32\
  • Windows 7: C:\Windows\SysWOW64\
  • Windows 7: C:\Windows\SysWOW64\
  • Windows Vista: ---
  • Windows Vista: ---

If the steps did not solve your AuthFWSnapin.dll file problem, you should consult a professional. A probability exists that the error(s) might be device-related and therefore should be resolved at the hardware level. A fresh operating system installation might be necessary – a faulty system installation process can result in data loss.

File versions list

Filename AuthFWSnapin.dll
System Windows 10
File size 5100544 bytes
Date 2017-03-18
File details
MD5 9769045f8fff695997c9561cba264688
SHA1 da9d854f30a41fcae3afcc44fff19ddad38159ef
SHA256 af27e4762e153289eee5b7679b8540d386d8091697e2bf88948289cf84f2770a
CRC32 9b74963f
Example file location C:\Windows\System32\
Filename AuthFWSnapin.dll
System Windows 8.1
File size 5120000 bytes
Date 2014-11-21
File details
MD5 0933602a0001a756132850ff53b72da9
SHA1 dc655b9b0001701701ab5fd74670a57606b0b177
SHA256 ad3ab907c64358ee80b01936331469a8eef600b053287c87bad8fd998224d383
CRC32 be26084e
Example file location C:\Windows\System32\
Filename AuthFWSnapin.dll
System Windows 8
File size 5118464 bytes
Date 2012-07-26
File details
MD5 7314a90c47437ba612558a98a1f0f110
SHA1 796e4621f368c83da8393a30c41f7ff0572cb8a0
SHA256 9df781df74ddcf2d2b170bafc24cdc7478fe3831edf446a3613640e240b483c4
CRC32 557face4
Example file location 1: C:\Windows\System32\
Filename AuthFWSnapin.dll
System Windows 7
File size 5066752 bytes
Date -0001-11-30
File details
MD5 13a1f9a72f81509658f3e0b6ac2ad994
SHA1 70cb1ce1630847e3b6437eb530f5182462d23314
SHA256 7b02c9797b32e7020d6c684f57aa3c70395ee1eacaeb427345fb1ccf0e5a0a85
CRC32 d1ffee91
Example file location C:\Windows\SysWOW64\
Filename AuthFWSnapin.dll
System Windows 7
File size 5066752 bytes
Date 2010-11-21
File details
MD5 1bc6d282ff30d768515eae0431f91552
SHA1 931e59e1ead1f827e37be38954c727721f73be27
SHA256 fe9620ab61ad5cb9b320c4ee5543fd3808bb8205b87f424e8a68b3f56ba535b1
CRC32 30395ae1
Example file location C:\Windows\SysWOW64\
Filename AuthFWSnapin.dll
System Windows Vista
File size 4595712 bytes
Date 2008-01-21
File details
MD5 bf200a6e875b347721af098f07982e73
SHA1 daacbd8e9f181f1732dab15030a0c41e98f0834e
SHA256 084a49500cdff699c50664c68f926e08d86b3fc2de4caee19eddf073f8ff3014
CRC32 c15a76e6
Example file location ---
Filename AuthFWSnapin.dll
System Windows Vista
File size 4595712 bytes
Date -0001-11-30
File details
MD5 fc772ba174094d86aa73a65a8ad77047
SHA1 328afc47de2d266c3330a4c9b3c9164610d6522e
SHA256 053167dd4ea57c83a78409b12b9be5eb668a83bac302dd5124c64364857cf266
CRC32 6d796ed9
Example file location ---