- 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
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