Import and activate a subscription
Import a subscription that supports the Clash configuration format, wait for it to finish downloading, then select the configuration. A saved subscription that isn't activated may leave the core using old settings. If an update fails, check whether the issue is with the URL, server response, or configuration parsing. Don't post subscription links in public discussions or screenshots.
Choose a mode and check your connection
For everyday routing, start with rule mode. Make sure the proxy group has a working option, then enable the system proxy. Global mode only changes the outbound route for connections the client handles—it doesn't automatically send every app through the client. If your browser connects but other apps don't, check whether they use the system proxy before considering TUN. Change one setting at a time.
Keep a rollback path for updates
Back up your configuration and local overrides before updating, then quit the old client and install the new package. Check the system proxy, startup settings, background services, and virtual network adapter separately; uninstalling the app may not remove them. Delete the old directory only after verifying the new client works. If something goes wrong, use the logs to pinpoint whether the issue is configuration parsing, DNS resolution, or the destination connection.