•If two or more VPN clients are installed on the computer, ensure only one is running to avoid conflicts. Check both for running applications and also for Windows services.
•Firewalls and antivirus programs may be running that block access to the VPN ports. Temporarily disable these to troubleshoot.
•Try other standard repairs and troubleshooting steps - reboot the client computer, delete and re-install the VPN client configuration settings, and find others who have working setups to compare for network configuration differences
- Test by telnet x.x.x.x 1723 (IP of VPN Server)
- Sometimes a home router can be the source of the problem. It may not handle PPTP or L2TP with address translation.
- If you’re trying to VPN away from where you normally do (hotel wifi) try a different connection if possible.
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