the problem is that is to early many hardware vendor need to start catching up and start delivering new drivers for win 10. as for the person having issue with their modem he need to contact Huawei so they are aware of this issue and put out a fix....in the mean time theirs only two option go back 8.1 or invest in a new modem.
pisthai: Sure it could also be Huawei, but I CAN connect through Mobile Partner that follows with the usb modem! But I CAN'T connect through Windows!
Actually this is not the first time, the same modem have problem with 8/8.1 before and need firmware update