Why can’t free nodes connect? This article helps you distinguish between an unavailable node, traffic not being routed through the proxy, DNS resolution issues, and browser environment problems. Check them in order to avoid repeatedly switching nodes without finding the cause. This guide applies to clients such as Clash, V2Ray, and sing-box; menu names may vary slightly between versions.
1. First determine whether the problem is with the node or your device
Free nodes may be temporarily unavailable due to maintenance, a high number of users sharing them, or an unreachable server address. “Subscription updated successfully” only means the configuration was downloaded; it doesn’t mean every node in it is working. A successful latency test also doesn’t guarantee that the destination website will open.
- Temporarily disconnect from the proxy and open a familiar website in your country. Make sure your Wi-Fi or mobile data connection is working. If the site still won’t open, troubleshoot your local network first.
- Check your device’s date, time, and time zone. Automatic settings are recommended, as an incorrect time can cause certificate verification to fail.
- Update your subscription, manually select another node, and try opening the same webpage again. You can use this site’s free nodes for testing, but don’t assume the client is broken just because one node fails.
- Test using both Wi-Fi and mobile data, keeping data usage in mind. If the problem only occurs on one network, focus on restrictions or DNS issues affecting that network.
Change only one setting at a time and record the results. This makes it easier to identify the problem than changing DNS, proxy mode, and browser settings all at once.
2. Check proxy routing and your exit IP
When a client shows “Connected,” it may only mean that the proxy service has started. On a computer, you usually need to enable “System Proxy.” On a phone, you need to allow the client to establish a VPN connection. Simply selecting a node doesn’t necessarily route your browser traffic through the proxy.
- Make sure the system proxy or VPN is enabled, and close any other VPN or proxy software to prevent connection conflicts.
- Temporarily switch the client to “Global” mode to test. If global mode works but rule mode doesn’t, check the rules, proxy group selection, and how the website is matched. Restore your original mode after testing.
- Use a trustworthy exit IP lookup page to compare the results before and after connecting. If the IP hasn’t changed, traffic may not be routed through the proxy, or the lookup site may be set to bypass the proxy by a rule. Don’t rely on this check alone to draw a conclusion.
A changed exit IP doesn’t mean every website will be accessible. If most websites work but a few reject access or repeatedly ask you to verify, the issue may be related to the shared exit IP’s reputation, regional restrictions, or the website’s security checks.
3. Check for DNS resolution issues
If the logs show messages such as “lookup failed” or “no such host,” or the browser says it can’t find the server, check your DNS settings. First identify whether the error refers to the node server’s domain or the domain of the website you’re trying to visit, as these affect different parts of the connection.
First restore the client’s default or recommended DNS settings, reconnect, and try again. Avoid applying multiple configurations found online at the same time. If you’ve manually enabled “Secure DNS” in your browser, temporarily switch back to the default setting to compare. Restore it after testing if needed. Don’t disable certificate verification or install certificates from untrusted sources.
4. Rule out browser issues and check the logs
Try opening the same URL in another browser or an incognito window. Incognito mode doesn’t necessarily disable all extensions, so disable proxy-related extensions individually if needed. If the problem only occurs in your original browser, clear the cache and cookies for that website; there’s no need to delete all browsing data.
If you still can’t connect, check the client logs: a timeout may indicate an unreachable node or packet loss; a connection refusal may mean the service isn’t available; an authentication failure means you should update your subscription and check that the configuration is complete. Before sharing logs, be sure to hide subscription links, UUIDs, passwords, and other credentials. Troubleshooting in the order of “local network—node—proxy routing—DNS—browser” usually makes it easier to narrow down the problem.