Currently using
Beta 17C79a
WiFi shows as connected, however webpages, remote locations etc will not load
WiFi appears to be enabled, and selectable
However you are unable to connect to the internet
I have deleted the WiFi connection, added again, renamed it, changed password etc, and the iMac still refuses to connect using WiFi - have to resort to Wired Ethernet
This has been happening for some time and has been reported using Feedback Assistant
All other non High Sierra Laptops along with iPads/iPhones (using iOS11) connect with no issues