On a operating system Vista computer, you are unable to establish a connection to the VPN server. The following symptoms occur:
1. After you enter the username and password for the VPN connection, it tries to connect for a while then the error message occurs:
Failed to connect to <connectionname>
2. If you create a new VPN connection, it shows as a Dial-up connection.
3. This event is logged in the Application event log.
To resolve this issue, uninstall and reinstall the miniports manually. To do so, follow the steps below:
1. Click Start>All Programs>Accessories and click "Command Prompt".
2. In the Command prompt, type the following commands one by one and press Enter after each one.
Netcfg -u MS_L2TP
Netcfg -u MS_PPTP
Netcfg -l %windir%\inf\netrast.inf -c p -i MS_PPTP
Netcfg -l %windir%\inf\netrast.inf -c p -i MS_L2TP
NOTE: When prompted by User Account Control, click Continue.