Windows 10: Cannot connect to network in Win10 1903

My computer has been suffering from Wifi problems recently. When I tries to connect to my wifi routers, the attempt would fail after a short period of time and say the mythic 'cannot connect to network'.


I have been trying to eliminate it for tens of hours but in vain, with all the recommended approaches failed.


This has also gave me some clues.


1. The computer has been recently updated to win10 1903. That was around 20 days before the problem first occurred. I don't know whether there are connections between these. And unfortunately, that was a long time that the upgrade rollback is unavailable.


2. My wifi adapter is Qualcomm Atheros QCA9377 and I noticed a tech-doc at https://aka.ms/qcamain10_4_0_2 . So I spent around 5 hours gathering different drivers that might be compatible. These include the original 12.0.0.722, and 12.0.0.725 , 12.0.0.832 and latest I can find 12.0.0.916. But none of these drivers solved the problem. The official package in the link above didn't work either.


3. Mysteriously, my laptop can still connect to the mobile wifi hotspots from my iPhone, android device. But when it comes to a router, it fails. I tried the wifi in my home ,in my office and my neighbor's, but none of them can be connected.


4. The wlan report generated by 'netsh wlan show wlanreport' indicates the main reasons have been'The driver disconnected while associating.'10 times in 15 attempts' and'The specific network is not available.'.4 times in 15. One of the log is like such:


Network Adapter: Qualcomm Atheros QCA9377 Wireless Network Adapter
Interface GUID: **
Connection Mode: Automatic connection with a profile
Prifile Name: **
SSID: **
BSS Type: Infrastructure
Failure Reason:The driver disconnected while associating.
RSSI: 255


I hope someone can propose some useful approach. I have already tried the standard troubleshoot in the articlehttps://support.microsoft.com/en-us/help/4000432/windows-10-fix-wi-fi-problems.So the general solutions like netsh/IP reset and windows troubleshooter doesn't work for me!

:)

 

Losing network connection

Hello Dear, if you have a laptop or a PC with a wireless network adapter, you can see a list of available wireless networks and then connect to one of those networks. The wireless networks will only appear if your PC has a wireless network adapter installed, the adapter is turned on, and the wireless access point is in range.

1. Click Start, click Control Panel, click Network and Internet Connections, and then click Network Connections.

2. In the left pane, under Network Tasks, click View available wireless networks.
In case, If you don't see the network you want to connect to, click Refresh network list. If you see the network but the signal is weak, move the PC closer to the wireless router.

3. Click the network you want to connect to, and then click Connect.

4. If you're connecting to a secure network, type the security key, and then click OK.

I Hope you solve out your query soon.

 

No network connection

Hello Graham,

To resolve your concern about wireless network issues, please click the link below and follow the suggested troubleshooting steps:

• Fix network connection issues in Windows 10

Let us know how it goes.

 

network connectivity

I highly suggest that you try these steps instead:

• 
  Press theWindows
  key + X button on your keyboard.
  
• 
  Go to
  Control Panel.
  
• 
  Select
  Network and Sharing Center.
  
• 
  Click on
  Internet options.
  
• 
  Choose
  Connections
  tab.
  
• 
  Click on
  LAN Settings.
  
• 
  Uncheck
  Use a Proxy server for your LAN.
  
• 
  Click
  Apply, then
  OK.