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File Version : 5.1.2600.0 built by: WinDDK
Description : Serial Port Enumerator
Copyright :
Product Version : 5.1.2600.0
Product Name : Windows (R) 2000 DDK driver
Company Name : Windows (R) 2000 DDK provider
Internal Name : serenum.sys
File Size: 8320 byte(s) 8.128 KB
MD5 : ff09da360947642b031197775ecf6996
SHA1: E74B0B985CD4BE6A0569A23A1B7D150D11041A6F

Download xnt5.sys
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How to Install xnt5.sys
Repair Sys ProblemsFixing a corrupted or missing xnt5.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.