netsh winsock reset
Then disable it, wait ten seconds, and re-enable. You’ll be back online before your call even realizes you’re gone.
This process removes all installed network adapters and their settings, then reinstalls them with factory default configurations upon restart.
Congratulations. You’ve just prevented 90% of future "Why did my internet drop?" mysteries.
If you are on Ethernet (wired):
ipconfig /flushdns