Why can’t I connect to a free node? This guide shows you how to distinguish between a failed node, a proxy that isn’t taking effect, DNS resolution issues, and browser conflicts. Troubleshoot in this order—local network → subscribed nodes → proxy mode → DNS → browser—to avoid repeatedly switching nodes without finding the cause. It applies to Clash, sing-box, and V2Ray clients and does not cover server configuration.
1. First, determine whether the node is down or there’s a problem with your local network
Free nodes may be temporarily unavailable due to maintenance, changes in the number of users, or routing restrictions. But if a webpage won’t load, that doesn’t necessarily mean the node is down. Turn off the proxy first and confirm that you can access regular websites. If direct access fails too, check your Wi-Fi or mobile data, or see whether your network requires you to sign in.
- Quit and reopen the client. Make sure a node is selected and the connection toggle is on.
- Enable automatic date and time. A significantly incorrect device clock can cause TLS certificate verification to fail.
- Try the same webpage with another node, then compare the results over Wi-Fi and mobile data. Keep an eye on data usage.
- Check the client logs. A timeout usually means you should check the route and whether the address is reachable. An authentication failure means you should verify the node settings. A certificate error means you should check the device time and subscription settings—don’t simply disable certificate verification.
A latency test returning a result doesn’t guarantee that webpages will load. Likewise, a failed test doesn’t necessarily mean all connections are unavailable. Check actual access and the logs together.
2. Check whether the subscription is up to date and the proxy is actually working
Manually update the subscription and check for download failures, parsing errors, or an empty node list. If you got free nodes through a source such as this site, check the release notes and client compatibility. Older clients may not support certain protocols or transport methods, so update from an official source.
Successfully importing a node doesn’t mean your traffic is going through the proxy. On desktop, check whether “System Proxy” is enabled. On mobile, confirm that VPN access has been authorized. If you’re using TUN mode, check for permission prompts and temporarily quit any other VPN or network acceleration tools to prevent conflicts.
In rule mode, traffic to the site you’re testing may be routed directly. You can briefly switch to global proxy mode for comparison, then restore the original mode after testing. Avoid changing multiple settings at once.
3. What issues can IP addresses and DNS cause?
If the node server’s IP address or port is unreachable, you’ll typically see a connection timeout. If the exit IP is restricted by the destination website, you may see errors or repeated verification prompts on only certain sites. This doesn’t mean the node is completely down; try different nodes or websites to compare.
DNS translates domain names into addresses. If you see a “server not found” message or the logs show a resolution failure, check whether the client’s recommended DNS settings are enabled. The browser’s secure DNS setting may also change the resolution path; temporarily set it to use the system default and test again. Don’t treat switching to an arbitrary public DNS server as a universal fix—it won’t solve problems with an unreachable node address or port.
4. What should you do if only the browser can’t access websites?
- Test in a private window. If it works, focus on site data and extensions, and check whether extensions are allowed to run in private mode.
- Temporarily disable proxy extensions to prevent them from overriding the client settings. Check whether the browser has a manual proxy configured.
- Try the same URL in another browser. If only one website is affected, clear that site’s cache and cookies.
Finally, follow the rule of changing only one setting at a time and record the results of each test. If several nodes fail across different networks, first check client and subscription compatibility. If only one node keeps failing, consider switching to another. Don’t install certificates or software from unknown sources while troubleshooting, and don’t share subscription links that contain passwords or tokens.