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File version : 6.1.7600.16385 built by: WinDDK
Description : BulkUsb Driver
Copyright : Microsoft Corporation. All rights reserved.
Product Version : 6.1.7600.16385
Product Name : Windows (R) Win 7 DDK driver
Company Name : Windows (R) Win 7 DDK provider
Internal name : bulkusb.sys
File Size: 25088 byte(s) 24.512 KB
MD5 : 838d2f35b544d89921d1460ca1a4a1d9
SHA1: 656DF0D3228FDBFF21A10639A04557A35E95AA7D

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