Download and install usbser.sys for free! Fix usbser.sys missing or corrupted error. Windows 7,Windows 8.1 and Windows 10. SYS File Information File Version : 5.1.2600.5512 (xpsp.080413-2108) Description : USB Modem Driver Copyright : © Microsoft Corporation. All rights reserved. Product Version : 5.1.2600.5512 Product Name : Microsoft® Windows® Operating System Company Name : Microsoft Corporation Internal Name : usbser.sys File Size: 26KB Download usbser.sys How to Fix usbser.sys Repair Sys ProblemsFixing a corrupted or missing usbser.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. Possible usbser.sys Error Messages descargar usbser.sys usbser.sys erro usbser.sys was not found usbser.sys fehlt usbser.sys скачать usbser.sys indir telecharger usbser.sys usbser.sys hatası Possible Causes of usbser.sys Error You may get usbser.sys error message when you are trying to run or install some applications. This kind of error can happen when Windows or software starts or shuts down, or maybe when you are using the computer or software. When and how this usbser.sys error happens is very important and helpful to figure out the cause and work out the effective solution. usbser.sys error may be caused by the following situations: usbser.sys file may be mistakenly deleted by someone, computer antivirus or system cleaning tools. usbser.sys file is corrupted or damaged by virus infections. Some applications were installed or uninstalled improperly. The configuration entries of usbser.sys file is still active in the systemregistry. There may be something wrong with your computer hardware.