In the 12 days since i upgraded to Big Sur, i have had 2 incidents of being unable to connect to the internet. I’m on the wifi ok and the wifi/internet connection is working with all other apple and android devices. BUT...the MacBook has no internet connectivity. I have found that one both occasions the solution is to reboot in Safe Mode and create a new network location. When I reboot the MacBook all is fine and dandy.
It’s frustrating because on both occasisions I lost over an hour’s productivity both times!
Also, I’m not technically minded, so the thought of doing these procedures is unnerving. One of the reasons I love Apple over Windows is that it takes away all this technical behaviour. I hope that Apple is not going down a slipper slope here!