Since upgrading to windows 10, my 4G LTE USB Modem 551L disconnects automatically if idle for 5 minutes. When I try to reconnect, I receive an "unknown error message" (MBNOx80548201) and have to reboot my entire computer to reset the modem reconnect to the internet. This is happening a dozen times a day. Is there a fix for this that does not require multiple reboots?
See if this thread can help. It involved the 551L and the user wanted it to run without VZAM and manually configure Windows to use it. I know it not for Windows 10, but the information still might help.