Try the following: https://www.howtogeek.com/167723/how-to-disable-driver-signature-verification-on-64-bit-windows-8.1-so-that-you-can-install-unsigned-drivers/
When installing the software Windows prohibits the installation of the unsigned drivers. This process explained in the link is safe to use and can be undone once the driver is installed. Use your USB cable to do updates and not via your phone.
When installing the software Windows prohibits the installation of the unsigned drivers. This process explained in the link is safe to use and can be undone once the driver is installed. Use your USB cable to do updates and not via your phone.
