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File version : built by: WinDDK
Description : Atheros Extensible Wireless LAN device driver
Copyright : Copyright (C) 2001-2006 Atheros Communications, Inc.
Product Version :
Product Name : Driver for Atheros Wireless USB Network Adapter
Company Name : Atheros Communications, Inc.
Internal name : athrusb.sys
File Size: 870400 byte(s) 850.0 KB
MD5 : 5d4f8664e13e71cb75d3fc0dd27fc24c
SHA1: EF1B42FF502BD0E008DCB75AF5E1B30306A0D5B7

Download WPN111v.sys
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How to Install WPN111v.sys
Repair Sys ProblemsFixing a corrupted or missing WPN111v.sys error is an easy process with a few steps. Open the zip-file you downloaded.Extract the .sys file to a location on your computer. We recommend you to unzip the file to the directory of the program that is requesting the file.
If that doesn't work, you will have to extract the file to your system directory.
By default, this is C:/WINNT/system32/drivers (Windows NT/2000).
or C:/Windows/system32/drivers (Windows XP, Vista, 7).
Make sure overwrite any existing files (but make a backup copy of the original file)
That should be it. Although not necessary you can reboot your computer as well.