This is the second time I encounter this issue: Windows 10 suddenly cannot connect to ONE specific WiFi network (which is my home network).
(Update: I remembered that the first time I encountered the issue is after I restored Windows 10 with Lenovo Onekey Recovery,which may modified the configuration of WiFi adapters' region and/or drivers(which I think it does not))
Other devices (Android smartphones and MacBook Pros) can connect to the WiFi network without any problem, so it should not be the problem of the router. I also tried to boot into a Ubuntu live session, and the computer connects to the WiFi network without any problem, which means the problem is not at the WiFi adapter.To conclude, the problem is caused by Windows.
Last time, I changed the WiFi channel used by the router, it worked fine until I change the WiFi channel again(update: it seems the choice of WiFi channels are limited to 1-11, before the issue, channel 1-13 can be used).
I tried to Google for the solution, but most of them are just Windows 10 troubleshooting guide, and the rest of them are not effective or does not suitable in my case.
How can I solve this issue, or at least, which part of Windows should I look at?
netsh wlan
commands from the command prompt will show WiFi profiles and help you remove them. I would suggest cleaning out any unused profiles, and removing the problematic profile. Then recreate it.