Windows 10 and 11 often block these drivers because they lack a valid digital signature.
If your Huawei modem has a physical switch (some E1550 models) or a microSD card slot with a switch underneath the cover – toggle it to "Modem" mode, not "SD Card Only" mode. huawei usb com 1.0 usb driver install problem solution
Believe it or not, the USB negotiation timing can fail. Windows 10 and 11 often block these drivers
Before diving into complex fixes, perform these quick checks. They solve 10% of cases. Before diving into complex fixes, perform these quick checks
Click and browse to the location where you downloaded the Huawei driver files.
Some security software (Bitdefender, Avast, McAfee) blocks the automatic driver installation of USB COM devices. Disable real-time protection for 5 minutes and re-insert the modem.
Sometimes the modem is stuck in a ghost state that requires removing the device entry from the registry.