Hi @Bob_775 ,
Which service are you using where you are facing this issue? This doesn't seem to be related to Microsoft Entra and with the current information it's difficult to discern the root cause, as there could be a number of reasons for the disconnection from the internet (ranging from service provider issues, networking issues, service outages, firewall and security settings, etc).
Often when I run into this issue with Windows though, it's related to the File and Printer Sharing settings.
Log into the computer and go to Control Panel > Network and Internet > Advanced network sharing > Advanced sharing settings. Then check the box next to "File and Printer Sharing" to enable file sharing.