Windows Internet Access after sysupgrade.bin

Installing and Using OpenWrt
1

Prolog:
After trying to install miniDLNA, I learned, from this forum, that my OpenWRT firmware is out of date. I performed an upgrade using the sysupgrade.bin.

History:
After some trial and error I was able to restore Internet access to my Debian based desktop computer. (firstboot, reboot, passwd)

The Windows 10 laptop and a generic brand tablet are not able to reconnect to the Internet.

Win10 shows "OpenWRT no Internet, secured". Looking for a solution, there are several and none of them work.

This is not an OpenWRT problem. It is entirely Microsoft's. But I feel it would be prudent to tell people, in big letters, ahead of time, that doing a system upgrade can cause these headaches.

2

If you have changed the WiFi password it is best to tell Windows to forget the network, then connect to it and configure it as a new connection.

But yes that is a Windows thing.

3

That has been done 3 or 4 times already. It does not work here.