Configure Tailscale clients to use a custom control server
The Tailscale clients allow you to specify a custom control server URL instead of the default https://controlplane.tailscale.com server. If you are using a self-managed deployment of Headscale as your control plane, use your Headscale instance's URL.
The Tailscale user interface for Windows doesn't support adding a custom control server URL yet. However, you can use the Tailscale CLI or edit registry settings to enable this feature.
To sign in with a custom control server URL from the Tailscale CLI, run the following command. Replace <URL> with your custom coordination server URL.
tailscale login --login-server=<URL>
For more details, refer to Deploy Tailscale on Windows using MDM to learn how to use a custom control server URL by editing the LoginURL registry value. An MDM solution is not required; it is possible to edit the registry values directly.