Big Sur - WirelessInternet drops or does not connect
I have just updated my MacBook Air (13 inch 2017) to Big Sur. When I try to use Safari, it tells me I am not connected to the Internet.
I also have a MacMini (2018), and my wife has a MacBook Pro (15 inch 2014), both of which are running Catalina 10.15.7. They are connected to the same wireless network, and are connecting properly.
Help - what is wrong with Bug Sur?
John
MacBook Air 13″, macOS 11.0