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File Version : 5.1.2600.2598 (xpsp_sp2_gdr.041130-1729)
Description : Windows NT SMB Minirdr
Copyright : Microsoft Corporation. All rights reserved.
Product Version : 5.1.2600.2598
Product Name : Microsoft Windows Operating System
Company Name : Microsoft Corporation
Internal Name : MRxSmb.sys
File Size: 451584 byte(s) 441.0 KB
MD5 : 5ddc9a1b2eb5a4bf010ce8c019a18c1f
SHA1: 41367B04D407C95CCE580140A2F73EC53A09323E

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