From: Ali El-Matarwy on
I have an usb benq scanner s2w4300u and I installed it many times before and
there was no problem at all, last time whn I connected it and was trying to
install it I got failed, I always receive the message "the class installer
has deied the request to install or upgrade this device"

I tried many solutions such as uninstalling all USB drivers, removing all
usb peripherals connected to the PC, installing new drivers for that

I hope to help me


Ali El-Matarawy