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File Version : 5.1.2600.0 built by: WinDDK
Description : ALi File System Filter Driver
Copyright :
Product Version : 5.1.2600.0
Product Name : Windows (R) 2000 DDK driver
Company Name : Windows (R) 2000 DDK provider
Internal Name : aliidex.sys
File Size: 7040 byte(s) 6.896 KB
MD5 : e63abae56c4215274b39d5f462b804e3
SHA1: 510E06FA6D3350DC51A561FE02939386BEDF029E

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