cannot connect to vpn

I cannot connect to a pptp vpn. The following errors occur when clicking the connect button in windows 10:

The modem(or other connecting device) has reported an error

A device attached to the system is not functioning

A connection to the remote computer could not be established, so the port used for this connection was closed

The connection was terminated by the remote computer before it could be completed

The network connection between your computer and the VPN server could not be established because the remote server is not responding. This could be because one of the network devices(e.g. firewalls, NAT, routers,etc) between your computer and the remote server is not configured to allow VPN connections. Please contact your Administrator or your service provider to determine which device may be causing the problem.

The network connection could not be found


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