KB77: PR3 - Using USBDeview Utility to uninstall failed PR3 installations

This article was last updated on March 5, 2017, 5:11 p.m. | Print Article | Leave Feedback

Note: If the PR3 driver installation process fails, you will have to uninstall the VCOM USB driver before attempting reinstallation.

We suggest using a utility called USBDeview for this purpose.  It is available for download from:


The process is simple, run the USBDeview program, location the VCOM driver in the list and right click to uninstall.


The software is provided "AS IS" without any warranty, either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose.

The author will not be liable for any special, incidental, consequential or indirect damages due to loss of data or any other reason.


USBDeview is a small utility that lists all USB devices that currently connected to your computer, as well as all USB devices that you previously used.

For each USB device, exteneded information is displayed: Device name/description, device type, serial number (for mass storage devices), the date/time that device was added, VendorID, ProductID, and more... USBDeview also allows you to uninstall USB devices that you previously used, and disconnect USB devices that are currently connected to your computer.

You can also use USBDeview on a remote computer, as long as you login to that computer with admin user.

This utility works on Windows 2000/XP/2003/Vista/7/8.

Windows 98/ME is not supported.

USBDeview doesn't require any installation process or additional DLL files.

Just copy the executable file (USBDeview.exe) to any folder you like, and run it.

The main window of USBDeview displays all USB devices installed on your system.

You can select one or more items, and then disconnect (unplug) them , uninstall them, or just save the information into text/xml/html file.

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