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File Version : 5.1.2600.0 (XPClient.010817-1148)
Description : SCM USB Smart Card Reader
Copyright : Copyright (C) SCM Microsystems, Inc. 1998
Product Version : 5.1.2600.0
Product Name : Microsoft(R) Windows(R) Operating System
Company Name : SCM Microsystems, Inc.
Internal Name : stcusb.sys
File Size: 16896 byte(s) 16.512 KB
MD5 : 2a31b4ba3b4c932ad427854dfda24268
SHA1: BA1615657BBC24BCC3AFAD5806594F9D9386E0E6

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