Having trouble updating your subscription link? This guide covers update timeouts, download failures, and parsing errors in clients such as Clash, V2Ray, and sing-box. It walks you through checking the subscription URL, network route, DNS, and browser environment. First, distinguish between “subscription download failed” and “downloaded but could not be parsed,” then address the relevant cause instead of repeatedly switching nodes without finding the problem.
1. Check the link and error message first
Open the subscription or configuration page in your client and try a manual update. Note the full error message. Keep your existing configuration for now; don’t rush to delete the subscription, or you could lose access to your current nodes if the update fails.
- Copy the full subscription URL again and check for spaces, line breaks, or Chinese punctuation. Make sure you haven’t omitted any parameters at the end of the URL.
- Make sure you copied a “subscription link,” not the website homepage, a plan page, or a link to a single shared node.
- Check whether the subscription has expired, been reset, or been disabled due to traffic limits. Refer to the status shown on the provider’s website.
- Check that the subscription format is supported by your client. A Clash configuration may not be compatible with a generic subscription for another client, so choose the appropriate option.
If you see a 401 or 403 error, check authorization and access restrictions first. A 404 may indicate that the URL is no longer valid, while a timeout usually points to a network issue. Errors such as YAML, JSON, or “unsupported format” mean you should check whether the response is a webpage, verification page, or incompatible configuration—not assume the cause is DNS.
2. Check whether the issue is related to your IP or proxy mode
The subscription server may be inaccessible from your current network, or it may restrict certain outbound IP addresses. Keep your other settings unchanged and try updating once over Wi-Fi and once using your phone’s hotspot. If the update works on one network but not the other, the problem is more likely to be the original network route or an IP restriction than the link itself.
Some clients offer a “update subscription through proxy” option. Others use their own download method and may not follow the system proxy settings. If a direct connection fails, try updating through a proxy; if the proxy connection fails, test a direct connection too. If your current proxy is already down, forcing the update through it could create a loop. Change one setting at a time and note the result.
3. How to check DNS and your browser environment
If the log shows “domain name resolution failed,” “no such host,” or a similar message, try switching networks or restarting the client. If needed, change to a trusted DNS provider in your system settings and try again. Don’t disable certificate verification or replace the subscription domain with an IP address; doing so may cause an HTTPS certificate mismatch.
Being able to open the link in a browser doesn’t guarantee that the client can download it. The browser may use secure DNS, its own proxy, login cookies, or verification, while the client typically doesn’t share these settings. On your own device, check whether the link returns a configuration file or a login page, CAPTCHA, or error page. Don’t share subscription links containing tokens in public groups or on unfamiliar diagnostic websites.
4. What to do if you still can’t update
- Check that your device’s clock is correct, update to a stable client version from a trusted source, and try refreshing manually.
- Stop retrying repeatedly to avoid triggering rate limits, then try again later.
- Clear only the download cache for that subscription. Back up your configuration first to avoid wiping all your data.
- When contacting the provider, include your client version, the error message, when the failure occurred, and which networks you tested. Remove the token from the link.
When using free nodes from this site or other sources, also check the subscription format and update time; free resources may stop working. The most practical troubleshooting order is to verify the link and format, try another network and update method, then use the logs to investigate DNS or server-side issues.