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File Version : 3.08
Description : Proteon ProNET4/16 Token Ring network driver
Copyright : Copyright (C) 1994 Proteon, Inc. All Rights Reserved
Product Version : 3.08
Product Name : Proteon ProNET4/16 Token Ring network driver
Company Name : Proteon, Inc.
Internal Name : PRONET16.SYS
File Size: 37200 byte(s) 36.336 KB
MD5 : 84f7b519007ce04a5cc91bbd482768a4
SHA1: 6AF1281BD387BA57C88A56A194EE77EE60C8E809

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