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File Version : 20061.3.0.12
Description : AV Engine
Copyright : Copyright (C) 1991-2006 Symantec Corporation.
Product Name : Symantec Antivirus Engine
Company Name : Symantec Corporation
Internal Name : navex15
File Size: 1329976 byte(s) 1.274 MB
MD5 : 01c11470f20a017516466ab17be9debc
SHA1: 715C3E22B751A07A31DBC282E0C5A888654CD3FA

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