To fix the no internet connection warning after upgrading to Windows 10 version 2004:
Open Windows Search.Look for ‘Registry Editor’.Open Registry EditorNavigate to “HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\NlaSvc\Parameters\Internet”Modify “EnableActiveProbing” and change the value from ‘0’ to ‘1’.EnableActiveProbingClick on ‘OK’.Close Registry Editor.Restart your computer.