Check if any third-party firewall or security software is blocking the VPN connection. Temporarily disable such software and check if the VPN works without interruption.\
Visit manufacturer's website or the network adapter manufacturer's website to download and install the latest drivers for your network adapter.
If you are using a third-party VPN client to connect to Azure VPN, check for updates or try using the built-in Windows VPN client to see if the issue persists.
Verify that the Azure VPN configuration settings are correct, including the server address, authentication type, and any required certificates or credentials.