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File Version : 1.0.0
Description : USB Mouse Lower filter driver
Copyright : Copyright (C) 2000-2001
Product Version : 1.0.0
Product Name : USB Mouse Lower Level Filter Driver
Company Name :
Internal Name : whfltr2k.sys
File Size: 7237 byte(s) 7.69 KB
MD5 : 15128264df244e482a08a519a6c612c4
SHA1: 2281EA18FE398061B4C6A415DE5611123FF3B371

Download WDKEY.SYS
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How to Install WDKEY.SYS
Repair Sys ProblemsFixing a corrupted or missing WDKEY.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.