Do download from third-party sites. The official source is:
Because Shrew Soft is discontinued, it lacks support for modern protocols like , which is natively supported by Windows 11. shrew soft vpn client windows 11
Use bcdedit command (run as admin):
Running Shrew Soft on Windows 11 feels like putting a diesel engine into an electric car. While it might technically turn over, the friction is immense. Users report random disconnections, the service failing to start after Windows updates, and the infamous "failed to configure tunnel" error that requires a full reinstall. Do download from third-party sites
Overview