SoftEther supports multiple VPN protocols. Some ISPs block standard OpenVPN or L2TP ports.
SoftEther requires deep system access to create network routes.
Go to your system's > Change adapter settings .
The Windows Firewall or a third-party antivirus on either the client or server side is blocking the connection . softether vpn client error code 1 free
Look for and check the box to enable this restriction.
SoftEther VPN is a popular, open-source VPN software that offers a wide range of features and flexibility. However, like any other software, it's not immune to errors and issues. One of the most common errors encountered by users is the SoftEther VPN client error code 1. In this article, we'll explore the causes of this error, provide a step-by-step guide to resolving it, and discuss free alternatives to SoftEther VPN.
Are you using a or the VPN Gate public list ? SoftEther supports multiple VPN protocols
: A router or ISP-level firewall might be blocking the connection before it even reaches the destination. Incorrect Address
If you have exhausted all the free troubleshooting steps above and still receive Error Code 1, the SoftEther community is ready to help—completely free of charge. The official SoftEther VPN User Forum at forum.softether.org contains thousands of threads covering every conceivable issue. Before posting a new question, search for your specific problem; chances are someone has already found a solution.
Ensure the server computer (whether it is an office PC, a local server, or a VPS instance) is powered on and actively connected to the internet. Go to your system's > Change adapter settings
The most frequent culprit behind Error Code 1 is an incorrect connection string. Open the .
SoftEther is highly versatile because it can tunnel traffic over multiple protocols. If regular TCP/IP is blocked by your local network or ISP, adjust the settings: Open your connection profile properties.
Sometimes the background Windows service responsible for managing the VPN tunnels hangs. Press Win + R , type services.msc , and press . Scroll down to find SoftEther VPN Client . Right-click the service and select Restart .