This guide explains what to do when a subscription link won’t update. If clients such as Clash, V2RayN, or sing-box can’t fetch a subscription or show a timeout, blank page, or 403/404 error, follow the steps below to check your IP, DNS, browser, and client environment and quickly determine whether the link has expired, the network is blocking access, or the problem is with your local configuration.
1. First, check whether the subscription link itself works
Many update failures aren’t caused by a faulty client. The subscription URL may have expired, been copied incompletely, or been truncated by the browser. First, copy the full link into your browser’s address bar and open it. If you see a long string of node configurations, YAML content, or base64 text, the link is probably working. If you see a 404 or permission error, or a blank page, you’ll need a valid subscription link.
- Copy the subscription link again, making sure not to miss any characters at the end.
- Make sure the link starts with http:// or https:// and contains no extra spaces.
- Try opening it using both mobile data and your home Wi-Fi to see if the issue is related to your network.
- If you use this site’s free node subscriptions, return to the node page to get the latest address and import it again.
Key point: Before troubleshooting a client that won’t update, test the link in a browser. It’s the quickest way to identify the problem.
2. Your IP address or network may be preventing updates
Some subscription services restrict unusual access, or your current IP may have an unstable route to the subscription server. This can cause timeouts, connection resets, or failed updates. Try switching networks: switch from Wi-Fi to a mobile hotspot, or restart your modem/router to get a new public IP address. If you’re already connected to a proxy, updating the subscription may cause a proxy loop or trigger routing rules that block the request. Try disconnecting the proxy and updating over a direct connection.
In Clash-based clients, also check whether subscription updates are routed through the system proxy. With global proxy enabled, some users find that their subscription URL is routed incorrectly by the rules. Temporarily switch to direct mode, update the subscription, and then restore your usual rules.
3. DNS and browser settings can also affect updates
If DNS resolution fails, the client won’t be able to find the subscription domain. Common messages include no such host, lookup failed, and timeout. Temporarily change your system DNS to a common public DNS server and try again. On mobile, you can also turn off Private DNS or Secure DNS and test again.
- Windows: In your network adapter settings, change DNS to 1.1.1.1 or 8.8.8.8.
- Android: Search Settings for “Private DNS” and temporarily set it to Off or Automatic.
- iOS: Switch Wi-Fi networks, or manually adjust the DNS settings for your current Wi-Fi network.
- Browser: Turn off ad blockers, privacy extensions, and Secure DNS, then open the subscription link again.
Note: A link opening in your browser doesn’t guarantee that the client can update, but if it won’t open in your browser, the client is unlikely to succeed either.
4. Common fixes in the client
If the link is valid and your network is working, try clearing the client’s cache and importing the subscription again. Clash users can delete the old profile and add the subscription again. V2RayN users can right-click the subscription group and select Update Subscription; if that doesn’t work, delete the group and recreate it. For sing-box graphical clients, make sure the configuration source URL is entered in the subscription field, not in the field for an individual node.
Try these steps in order: update the client first, then delete the old subscription, paste the link again, and finally check the logs. If the logs show TLS, DNS, or timeout errors, troubleshoot the network first. A parse error usually means the subscription format is incompatible; try a format compatible with Clash or V2Ray.
5. How to diagnose persistent failures
Try the same subscription link on another device. If it works on other devices, the problem is with your local environment. If it fails on all devices, the subscription has probably expired or the server is temporarily unreachable. Avoid repeatedly refreshing the subscription, as this may trigger access restrictions. Instead, wait a while, switch networks, and try again, or use a new, working subscription source.
Summary: If your subscription link won’t update, check these in order: link validity, IP and network, DNS resolution, browser extensions, and client cache. This should help you identify the cause in most cases. To avoid sudden connection issues, keep a backup subscription and update your client regularly.