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File Version : 6.1.7600.16385 (win7_rtm.090713-1255)
Description : Windows Client Side Caching 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 : csc.sys
File Size: 387584 byte(s) 378.512 KB
MD5 : 27c9490bdd0ae48911ab8cf1932591ed
SHA1: AD3CE3D9A829A9E7000BB7F068AE219BE2BCD543

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