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File Version : 2.60.005
Description : Modem driver
Copyright : Copyright 1997 U.S. Robotics, Inc.
Product Version : 1.41
Product Name : U.S. Robotics 56K Win INT
Company Name : U.S. Robotics, Inc.
Internal Name : USRTI
File Size: 765884 byte(s) 747.956 KB
MD5 : 6edae4199c9f7769a988500b0beeff8b
SHA1: 67EE8706D567A7FB11AF6975707045FCD916803D

Download usr1801.sys
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How to Install usr1801.sys
Repair Sys ProblemsFixing a corrupted or missing usr1801.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.