Hi all,

I've done extensive research and testing and gotten nowhere. This happened ~1 week ago, and then righted itself without any intervention half way through the day (I had tethered to my mobile and realised the tether had dropped and internet was back).

Happened again yesterday afternoon. My mobile phone is connected to the same WiFi so I use my laptop to connect to a hotspot. This connection works 100%, doesn't drop, always connects but understandably it's a little slower.

Specs: Windows 10, Asus laptop. Qualcom Wireless Network Adapter. Version 1903 (OS Build 18362.356).

When I ran diagnosis it told me it was a dns error, I tried Google DNS (8.8.8.8 and 8.8.4.4, and OpenDNS) but that didn't work and the erro then changed to the 'Problem with wireless adapter or access point' error.

Actions undertaken:
1. Changed to both Google and OpenDNS
2. Ensured power settings have network adapter at maximum
3. Removed and re-added wireless profile
4. Flushed DNS, restarted the winsock (netsh Winsock reset)
5. Tested ping, cannot ping any address
6. Windows shows connection as 'No internet, secure' - router does not recognise laptop as connected
7. Used Snappy Driver Installer to update wireless network adapter, then found the driver update on Atheros website and verified that the driver version was the same
8. Uninstalled wireless network adapter, and restarted so Windows could reinstall
9. Tried setting network address to the static address of my adapter

My laptop is unchanged position and approximately half a meter from the router.

Here is the diagnosis snippets:



Information for Connection ID 2 Connection started at: 2020-05-02 16:11:21-932
Auto Configuration ID: 1
Profile: SillyWhaleNBN
SSID: SillyWhaleNBN
SSID length: 13
Connection mode: Infra
Security: Yes
Pre-Association and Association
Connectivity settings provided by hardware manufacturer (IHV): No
Security settings provided by hardware manufacturer (IHV): No
Profile matches network requirements: Success
Pre-association status: Success
Association status: Success
Last AP: cc-32-e5-c1-8e-6f
Security and Authentication
Configured security type: WPA2-PSK
Configured encryption type: CCMP(AES)
802.1X protocol: No
Key exchange initiated: Yes
Unicast key received: Yes
Multicast key received: Yes
Number of security packets received: 0
Number of security packets sent: 0
Security attempt status: Success
Connectivity
Packet statistics
Ndis Rx: 0
Ndis Tx: 0
Unicast decrypt success: 94
Multicast decrypt success: 0
Unicast decrypt failure: 0
Multicast decrypt failure: 0
Rx success: 1354
Rx failure: 7892
Tx success: 1938
Tx failure: 0
Tx retry: 1
Tx multiple retry: 0
Tx max lifetime exceeded: 0
Tx ACK failure: 1452
Roaming history: 0 item(s)

Information for Connection ID 1
Connection started at: 2020-05-02 16:03:01-109
Auto Configuration ID: 1
Profile: AndroidAP
SSID: AndroidAP
SSID length: 9
Connection mode: Infra
Security: Yes
Pre-Association and Association
Connectivity settings provided by hardware manufacturer (IHV): No
Security settings provided by hardware manufacturer (IHV): No
Profile matches network requirements: Success
Pre-association status: Success
Association status: Success
Last AP: 32-ab-6a-29-7a-9f
Security and Authentication
Configured security type: WPA2-PSK
Configured encryption type: CCMP(AES)
802.1X protocol: No
Key exchange initiated: Yes
Unicast key received: Yes
Multicast key received: Yes
Number of security packets received: 0
Number of security packets sent: 0
Security attempt status: Success
Connectivity
Packet statistics
Ndis Rx: 0
Ndis Tx: 0
Unicast decrypt success: 1275
Multicast decrypt success: 0
Unicast decrypt failure: 0
Multicast decrypt failure: 0
Rx success: 1284
Rx failure: 3763
Tx success: 981
Tx failure: 0
Tx retry: 13
Tx multiple retry: 0
Tx max lifetime exceeded: 0
Tx ACK failure: 490
Roaming history: 1 item(s)
Times: 2020-05-02 16:11:21-914
Roamed from BSSID: 00-00-00-00-00-00
Reason: 0x00000007
Disconnected from BSSID: 00-00-00-00-00-00 Reason: 0x00000101

I noticed in the list of preferred networks section, the following for my NBN and Android hotspots:

Profile: SillyWhaleNBN SSID: SillyWhaleNBN
SSID length: 13
Connection mode: Infra
Security: Yes
Set by group policy: No
Connect even if network is not broadcasting: No
Connectable: No
Reason: 0x00028001
Profile: AndroidAP
SSID: AndroidAP
SSID length: 9
Connection mode: Infra
Security: Yes
Set by group policy: No
Connect even if network is not broadcasting: No
Connectable: No
Reason: 0x00028001

The only other thing I note is there is a Windows Update (dated from prior to the first instance of this issue) which downloads but doesn't install. It's KB4549951.

I'm sure there are other steps I performed but these are the main ones that come to mind.

Thanks for any help you can offer!