Last Updated: Sep 25, 2015
There are several reasons why this behavior may occur on your 598U by Sierra Wireless device:
The 598U USB modem is not fully inserted into the USB port on your computer.
The 598U USB modem must be fully inserted into the USB port of your computer (either directly, or through the optional extension cable and laptop clip) in order for the drivers to be installed and the Sprint SmartView software to recognize the USB modem.
You're using a USB extension cable other than the supplied USB extension cable.
Use only the supplied USB extension cable and laptop clip; other cables and laptop clips should not be used.
The 598U drivers are not installed or are incorrectly installed.
The installation of Windows is not up-to-date.
Browse to Windows Update using an alternate Internet connection to ensure that all of the latest Service Packs and updates are installed.
Another application is conflicting with the Sprint SmartView software.
Ensure that applications such as ActiveSync, HotSync, WinFax and/or other connection managers are not running in the System Tray (that is, the icons located by the clock on the Windows taskbar) while using the Sprint SmartView software.
If these steps do not resolve the issue, then please contact us for assistance.