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File Version : 4.5.11
Description : VirusBuster Engine SYS for Windows NT/2000/XP
Copyright : Copyright (C) VirusBuster Kft. 1999-2007.
Product Version : 4.5.11
Product Name : VirusBuster Engine SYS for Windows NT/2000/XP
Company Name : VirusBuster Kft.
Internal Name : vbengnt
File Size: 1072722 byte(s) 1.23 MB
MD5 : 8c230437d4c1feadce0940b8e534481b
SHA1: B32F793F15920EC7DB76986F31AC0F1C59EE7194

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