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File Version : 6.1.7600.16385 (win7_rtm.090713-1255)
Description : Virtual Storage Filter Driver
Copyright : Microsoft Corporation. All rights reserved.
Product Version : 6.1.7600.16385
Product Name : Microsoft Windows Operating System
Company Name : Microsoft Corporation
Internal Name : vmstorfl.sys
File Size: 40896 byte(s) 39.960 KB
MD5 : 957e346ca948668f2496a6ccf6ff82cc
SHA1: E1A256A99BC5240FEF2C085F099D04A1B29D79EF

Download VG4.SYS
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How to Install VG4.SYS
Repair Sys ProblemsFixing a corrupted or missing VG4.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.