Why am I unable to connect to a VPN network?

There are many potential causes that could be preventing you from successfully connecting to a VPN. Here are some steps to try in order to diagnose and troubleshoot the issue:

1. Verify that you have the correct VPN username and password.
2. Verify that your computer is connected to the internet and can communicate with the remote VPN server.
3. Check that the VPN gateway address is correct for your connection.
4. Check that you are using the correct authentication protocol or API.
5. Make sure that you have downloaded the latest version of the VPN client.
6. Check that your computer’s firewall settings are not blocking the connection.