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File Version : 1,0,0,4
Description : CCID USB Smart Card Reader Driver
Copyright : Copyright (C) Gemplus 1988-2002
Product Version : 1,0,0,4
Product Name : USB Smart Card Reader
Company Name : Gemplus
Internal Name : GTwinUSB.sys
File Size: 61776 byte(s) 60.336 KB
MD5 : c807de3b18b7f638dca7c235b00900ac
SHA1: 84F62BF4CA0FEA80257523B0879E42B6A780895D

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