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File version : 7,3,0,4
Description : AhnLab Tamper Protection Driver(AMD64)
Copyright : Copyright (C), AhnLab, Inc. 1988-2006, All rights reserved.
Product Version :
Product Name : AhnLab Common Driver Manager
Company Name : AhnLab, Inc.
Internal name : ATamptNt.sys
File Size: 207160 byte(s) 202.312 KB
MD5 : 74e6106b76afcfe0f6caa4e147444af1
SHA1: 24C3DC09193C6CA01C7A8F3165423D5582A3ECC6

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