Enable "VPN over HTTPS" or "VPN over ICMP/DNS" in the advanced settings of your SoftEther client. These protocols are harder for firewalls to detect. Conclusion
In this guide, we will break down why this happens and provide step-by-step free solutions to get your connection back up and running. What is SoftEther VPN Client Error Code 1? softether vpn client error code 1 free
If you are on a school or corporate Wi-Fi, they might be using "Deep Packet Inspection" (DPI) to block VPNs. Enable "VPN over HTTPS" or "VPN over ICMP/DNS"