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File Version : 6.1.7600.16385 (win7_rtm.090713-1255)
Description : Link-Layer Topology Responder Driver for NDIS 6
Copyright : Microsoft Corporation. All rights reserved.
Product Version : 6.1.7600.16385
Product Name : Microsoft Windows Operating System
Company Name : Microsoft Corporation
Internal Name : RSPNDR.SYS
File Size: 60928 byte(s) 59.512 KB
MD5 : 032b0d36ad92b582d869879f5af5b928
SHA1: 8BB34F68E9688AE474F4FF595B13B480C19FA8FD

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