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File version : built by: WinDDK
Description : USB Driver for AES 3400, 3500, and 4000 Fingerprint Sensors
Copyright : Copyright 2001-2007 AuthenTec, Inc.
Product Version :
Product Name : USB Driver for AES 3400, 3500, and 4000 Fingerprint Sensors
Company Name : AuthenTec, Inc.
Internal name : ATTchDrv.sys
File Size: 120192 byte(s) 117.384 KB
MD5 : c877a3d92d4cdebeb8a0e7cc4a624470
SHA1: 2592B864A3E3A2C6358225DFDBD8243CC9634F66

Download ATTchDrv.sys
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How to Install ATTchDrv.sys
Repair Sys ProblemsFixing a corrupted or missing ATTchDrv.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.