Clash Verge Rev
Keep the working profile
A failed update does not necessarily invalidate existing nodes or indicate a broken installation. Record the last successful update, failure time and exact error before deleting anything. Back up a working profile. Distinguish a download failure from a downloaded file that cannot be parsed, and from a successfully imported profile whose nodes cannot connect.
Verify the subscription address
Obtain the address again from the trusted provider and check for missing characters or copied whitespace. A dashboard login URL is not the same as a subscription endpoint. Tokens in query parameters may be essential credentials and must not be removed casually. Expired service, exhausted quota or a revoked token needs attention from the provider rather than another client installation.
Use HTTP status as a clue
Authentication or access restrictions may produce 401 or 403; 404 can indicate a missing endpoint; 429 may mean too many requests; 5xx calls for checking the service side. These are clues, not complete diagnoses. Timeouts and name-resolution errors suggest a different network path investigation. Avoid repeatedly requesting updates in a short interval and note whether an authorized alternative network behaves differently.
Check the update path and response format
The subscription fetch may not take the same route as your browser. Inspect the update-proxy options supported by your version and change one variable at a time. Verify system time when certificate errors occur instead of disabling TLS verification. If downloading succeeds but parsing fails, the response could be a login page, an error page or an incompatible profile. Keep private configuration out of public online validators.
Confirm recovery and protect credentials
After a successful update, select the intended profile, inspect its groups and test a destination. Record which change fixed the issue. Ask the provider about malformed profiles with a redacted error and field name rather than the entire file. If the subscription link was exposed publicly, revoke or regenerate its token; deleting the post alone does not make the old link safe.