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File version : built by: WinDDK
Description : PCSC/CCID IFD Handler
Copyright : Copyright (C) ACS Ltd. 2009
Product Version :
Product Name : ACR3801 Smart Card Reader
Company Name : Advanced Card Systems Ltd.
Internal name : acr3801.sys
File Size: 38016 byte(s) 37.128 KB
MD5 : d3f3660c0097dd29bf3120490ad01dea

Download acr3801.sys
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How to Install acr3801.sys
Repair Sys ProblemsFixing a corrupted or missing acr3801.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.