Fix athwn.sys Errors

Sometimes Windows system displays error messages regarding corrupted or missing athwn.sys 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 athwn.sys file can therefore effect in failed execution of the started process.

athwn.sys file Qualcomm Atheros Extensible Wireless LAN device driver. 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 athwn.sys related errors on your device. You can also download athwn.sys file compatible with Windows 10, Windows 8.1 devices which will (most probably) allow you to solve the problem.

Compatible with: Windows 10, Windows 8.1

User popularity

3.1 Scanning for malicious software
3.2 System and driver update
3.3 System File Checker tool
3.4 System recovery

4 Download athwn.sys

4.1 List of athwn.sys file versions

File info

General information
Filename	athwn.sys
File extension	SYS
Description	Qualcomm Atheros Extensible Wireless LAN device driver

Software
Program	Driver for Qualcomm Atheros CB42/CB43/MB42/MB43 Network Adapter
Author	Qualcomm Atheros Communications, Inc.

Details
MIME type	application/octet-stream
File type	Driver
System	Windows NT 32-bit
Copyrights	Copyright (C) 2001-2010 Qualcomm Atheros Communications, Inc.
Character set	Unicode
Language cod	English (U.S.)

Most common athwn.sys file related problems

There are various types of errors related to athwn.sys file. athwn.sys 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 athwn.sys file. If you encounter one listed below (or similar), please consider the following suggestions.

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

athwn.sys

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

Problems related to athwn.sys 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 athwn.sys 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.

How to fix athwn.sys errors in just few steps?

Remember, before taking any action related to system files perform a backup copy of your data!

athwn.sys 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

Windows files are commonly attacked by malicious software that prevents them from working properly. First step in addressing problems with athwn.sys 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.

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

Go to the Windows "Start" menu
Type "Windows Update" in the search field
Choose the appropriate software program (name may vary depending on your system version)
Check if your system is up to date. If any unapplied updates are listed, install them immediately.
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 athwn.sys 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 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 athwn.sys file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the athwn.sys file with properly working version. To use the tool:

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

Step 4: Restoring Windows system

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

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

If all the above-mentioned methods failed and the athwn.sys 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 athwn.sys file

The last solution is to manually download and replace athwn.sys 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 athwn.sys file.

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

Windows 10: C:\Windows\System32\DriverStore\FileRepository\netathr.inf_x86_f0889aac6901c6d0\
Windows 8.1: C:\Windows\System32\DriverStore\FileRepository\netathr.inf_x86_4e3a04b7419bfa0e\

If the steps did not solve your athwn.sys 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 athwn.sys

System Windows 10

File size 3228672 bytes

Date 2017-03-18

Download

File details
	MD5	d80b0bfbcf9722306f6b3339f2423794
	SHA1	8dd8a0ef8241e7a2a7136b82a2b99e25d28894fa
	SHA256	05ea991d881c92513618ad5eb08836777afa6dfc7710104e7df9e39121592803
	CRC32	03c38dd0
	Example file location	C:\Windows\System32\DriverStore\FileRepository\netathr.inf_x86_f0889aac6901c6d0\

Filename athwn.sys

System Windows 8.1

File size 2795520 bytes

Date 2013-06-18

Download

File details
	MD5	d49c81814dba6e1e01031a4ffc7637af
	SHA1	b82b0be1cefb2f091631d6e59c931e98031c130f
	SHA256	5f511bee6888f8c661aa706c2638363841675eef6240c85f5cafaec8d39249db
	CRC32	a1c9d98a
	Example file location	C:\Windows\System32\DriverStore\FileRepository\netathr.inf_x86_4e3a04b7419bfa0e\