Windows 10: Wifi adapter in randomly disabled in settings but is still enabled in device manager

I will be using WiFi and suddenly it's gone. I'm using a Realtek 8812AU Wireless LAN 802.11ac USB NIC. Windows does something and the NIC is disabled in settings and if I am able to access settings enabling the device fails. Other times I can't access settings at all. In either case the only fix I've found is to restart my laptop. Sometimes I can go for days without this happening other times it happens several times a day.

:)

 

Wifi adapter randomly stops.

Hello!,

As the title suggests, my wifi card (Qualcomm Atheros QCA 9377) randomly stops working. It is showing a message on device manager saying something like "Windows has stopped this device because it has reported problems." This only started happening after
updating to Windows 10 1809 update. I can fix the problem by disabling and re-enabling the adapter but seriously, who wants doing that everytime it happens? Can someone give me suggestions on how to fix it permanently?

 

Update made wifi adapter disapear

If the wifi adapter appears in Device manager without any warning triangle but there is no wifi section in Settings, Networks then reinstall the wifi adapter.

If the wifi adapter appears in Device manager without any warning triangle and there is a wifi section in Settings, Networks then use Settings, Update, Troubleshoot. I'd suggest this sequence:-
Hardware & devices
Network adapter
Internet connections

Best of luck,
Denis

 

Wifi adapter completely disappeared, not listed in Device Manager

I'm asking this question not for myself but for anyone who might run into the same problem as me in the future, to save them a lot of time and possibly panic.

I had a BSOD (an undiagnosed graphics issue that is triggered by Skype conference calls). When I rebooted, my wifi adapter had completely disappeared (a Qualcomm Atheros QCA61x4A; the computer is a Lenovo Yoga 710-14IKB). The network troubleshooter couldn't bring it back and it had completely disappeared from Device Manager. I plugged in an ethernet adapter and tried downloading and twice reinstalling the driver and then rebooting, but that didn't work. I ran "DISM /Online /Cleanup-Image /RestoreHealth" and then "sfc /scannow" in an adminstrator PowerShell, but still no joy. I then booted into MX Linux from a USB stick, but that couldn't see the wireless adapter either. By this point I was convinced that the BSOD had killed the wireless adapter hardware, but I tried one more thing. I rebooted into the UEFI settings and looked to see whether the adapter was listed as enabled there. Apparently it was, so I changed nothing and then selected "save and exit". When Windows started up again, the adapter was working. I then tried rebooting into MX Linux and the adapter was working there too.

Which of the steps I took is most likely to have resolved the problem? Was it when I opened the UEFI settings and saved them without changing them?