When the WiFi Miniport adapter is missing, it will stop being visible inside Device Manager or the Adapter Settings list.
The WiFi Miniport is essentially a virtual device that only exists after the user has successfully succeeded in setting up a hosted network. This error typically occurs because the WiFi Miniport Adapter is either removed by mistake or disabled by a 3rd party software. Most users encounter this issue after trying to create a hotspot on their Windows computers. Some users have been reporting that their Wi-Fi connections are not functioning because Microsoft Virtual Wifi Miniport Adapter is missing.