Windows 10 monitors the network and Internet connections. If it detects a problem, Windows displays a message, and prompts you for permission to diagnose the problem. Click OK to allow Windows to diagnose the problem and restore the connection.
To run the diagnostic tool manually, use one of the following options:
-
No error message is displayed, but there is no Internet or network connection:
Right-click the
Network Connection icon

in the notification area, then click
Troubleshoot problems. Windows Network Diagnostics checks for problems.
-
The Network Connection icon is missing in the notification area:
From the search box on the taskbar, type repair network, then select Identify and repair network problems from the search results.