For v2rayN users dealing with subscription timeouts, authentication errors, empty node lists after an update, or scheduled refreshes that never run. First distinguish download failures from parsing errors, then check the URL, request route, and certificate. Once a manual update works, set a reasonable interval for each group to avoid repeated requests that can make things worse.
Subscription Update Failed? Find Where the Request Stops
Updating a subscription is not the same as testing node latency. v2rayN first sends a request to the subscription URL, receives a response, parses the node data, and updates the group. A working node does not mean the subscription site is reachable, and a successful download does not guarantee the response is in a format the client can parse.
Start by noting when the failure occurred, which group was selected, how you triggered the update, and the first error in the log. “Update failed” is only the result; DNS errors, HTTP status codes, TLS errors, or parsing failures tell you what to check next. Repeatedly clicking Update creates duplicate log entries and may trigger the service's rate limits.
- No response at all: Check DNS, the network route, proxy listener, and connection timeout.
- 401, 403, or 404 response: Check subscription authorization, account status, and whether the URL has changed.
- Download completes but no nodes appear: Check whether the response is a login page, error page, or unsupported subscription format.
- Only scheduled updates fail: Check that the app is running, the system is not asleep, and the network is ready when the update runs.
Invalid Subscription URL: Check Authorization and Response Format
Copy the subscription URL again from your provider's account page, preferably using its Copy button rather than selecting the text manually. Make sure it contains no leading or trailing spaces, line breaks, or punctuation, and don't use the account page or a QR-code image URL as the subscription URL. If you recently reset the subscription token, the old link may no longer work.
| Response | Possible cause | What to do next |
|---|---|---|
| HTTP 401 | Missing credentials, invalid token, or revoked access | Get a new URL from your account page and check its authorization status |
| HTTP 403 | Access policy, account permissions, or security rules blocking the request | Ask your provider about the restrictions instead of repeatedly switching nodes |
| HTTP 404 | Incorrect path or an obsolete subscription endpoint | Check the full URL path and use the current endpoint provided |
| HTTP 429 | Request rate exceeds the server limit | Stop retrying and wait as directed by Retry-After |
| HTTP 5xx | Temporary issue with the subscription service or its upstream provider | Keep existing nodes, try again later, and check service announcements |
| HTTP 200, but the response is a web page | A login page, verification page, or error message was returned successfully | Confirm the endpoint and a format supported by the client, then inspect the response body |
A status code is a clue, not a diagnosis. A 403 alone doesn't prove your plan has expired, and a 200 doesn't guarantee the subscription is valid. Your browser may already have a login cookie or use a different proxy route, so being able to open the URL in a browser does not prove the client can download and parse it.
For format issues, use the subscription endpoint your provider specifically identifies as compatible with v2rayN. A Base64-encoded list of share links serves a different purpose from a native core JSON configuration; a valid JSON file is not necessarily an importable node subscription. Confirm the format before considering a client upgrade, and don't edit the response arbitrarily.
First confirm the response, then troubleshoot parsing
If the response is a login or access-denied page, switching cores usually won't help. Fix the URL and authorization first; check client format support only after you receive valid node data.
Update Through a Proxy Without Depending on a Dead Node
Manual subscription updates in v2rayN generally offer two options: “Through proxy” and “Without proxy.” Menu labels or locations may vary slightly between desktop versions; check the corresponding options under “Subscription group” in the main window. These options control the download route, not the sort order of the node list.
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Select the target group
Select the subscription group you want to troubleshoot in the main window. Go to “Subscription group” → “Subscription group settings” to check its URL. Change only the failing group so you don't introduce multiple variables at once.
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Test a direct update first
Run one test using “Subscription group” → “Update all subscriptions (without proxy)” and note the response or error. If you have other groups, this updates them too, so check first that you won't hit a rate limit.
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Confirm the proxy works
Select a node that still connects and make sure the core is running, then choose “Update all subscriptions (through proxy).” A successful latency test does not prove the proxy can reach the subscription service.
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Compare the two results
If a direct update fails but one through the proxy succeeds, investigate the direct route. If both return the same authentication error, focus on the URL or account rather than changing routing rules.
Updating “through proxy” depends on a working local listener and outbound connection. Don't assume example ports match your setup: if the client listens on 10808 but a diagnostic tool connects to 10809, the connection may simply be refused. Use the protocol, address, and port shown in your current configuration and startup log; HTTP and SOCKS proxies are not interchangeable.
If all your old nodes are down and the subscription is only reachable through a proxy, you're stuck in a dependency loop. Try another network that can reach the subscription service, or ask your provider for a direct-access endpoint. Switching between protocol names such as VMess and VLESS won't fix a subscription authorization error; they are separate parts of the process.
Time and Certificates: How to Diagnose TLS Errors
HTTPS requests validate the certificate chain, domain name, and validity period. If your system clock is significantly off, a valid certificate may appear not yet valid or expired. On Windows, open “Settings” → “Time & language” → “Date & time,” check the date, time zone, and automatic time setting, then click “Sync now.”
Error: The SSL connection could not be established, see inner exception.
Cause: The TLS handshake or certificate validation failed. Check the inner exception for details.
Fix: Sync the system clock first, then check the certificate chain, domain, and any HTTPS inspection software on the network. Keep the inner exception for further diagnosis.
Error: No such host is known.
Cause: The subscription domain could not be resolved. The URL may be misspelled, or the current DNS server may not return a result.
Fix: Verify the current domain with your provider and try another network for comparison. If needed, use nslookup to check whether the domain resolves.
Error: Connection refused
Cause: The target port refused the connection. For updates through a proxy, the local proxy listener may not be running.
Fix: Use the log to identify whether the refused connection was to a local port or remote service, then check that the core is running and the port is configured correctly.
These are examples of errors that can appear in the network stack; wording varies by operating system, client version, and interface language. The top-level “request failed” message alone is not enough—the expanded inner exception is often much more useful.
w32tm /query /statusThe Windows commands above show the time service status and recent synchronization details; they do not change your subscription settings. If time synchronization itself fails, check the network and system time service first. HTTPS inspection on corporate networks can also alter the certificate chain; follow your network administrator's certificate deployment guidance.
- Certificate errors for one subscription domain only: Check whether its certificate has expired or the domain name matches, then contact your provider.
- Certificate errors across multiple HTTPS sites: Check the system clock, system updates, trusted certificates, and network inspection software.
- Browser works but the client fails: Compare proxy routes and trusted certificate environments; this does not rule out a certificate issue.
- Don't disable certificate validation to bypass an error. Subscription URLs contain credentials, and skipping validation increases the risk of exposure or tampered content.
Auto-Update Intervals: Get One Manual Update Working First
Auto-update simply repeats the subscription request on a schedule; it won't fix an invalid URL or a dead proxy. Complete a manual update first and confirm the node count and group contents look right. Then go to “Subscription group” → “Subscription group settings,” edit the target group, and find the auto-update interval field.
The field location, units, and trigger behavior may vary by version, so check the label before entering a value. If the unit is minutes, enter 360 for 6 hours or 1440 for 24 hours. If the unit is hours, enter 6 or 24, respectively. Don't copy an interval into a field with different units.
These are suggested settings and time conversions, not client defaults or measured update counts. Actual runs depend on how long the app stays open, sleep, network recovery, and the version's implementation. Follow your provider's stated limits if it specifies an update frequency. Stable nodes don't need to be refreshed every few minutes just to “keep them fresh.”
| Group purpose | Suggested interval | When to adjust |
|---|---|---|
| Everyday use | 6–12 hours | Extend to 24 hours when the provider rarely changes its nodes |
| Backup connection | 24 hours | Update manually before switching to the backup connection |
| Troubleshooting | Temporarily disable scheduled updates | Resume after a successful manual test to avoid cluttering the logs with repeated requests |
Tip: Space out updates instead of using short intervals to retry
Start with 6 hours for frequently used groups and 24 hours for backup groups. If you see a 429 or persistent authentication errors, pause auto-refresh first. Resume the original interval after fixing the issue.
Follow the current interface instructions to disable updates: some versions use 0 to mean no automatic updates, while others have a separate toggle. Reopen the group settings after saving to make sure the value was retained. Don't assume auto-updates use the proxy option from your last manual update; check the version's documentation and logs.
Groups and Verification: Make Sure Filters Aren't Hiding Updated Nodes
Use separate groups for subscriptions from different providers, such as “Everyday” and “Backup.” This lets you set different intervals and identify which source returned an error. “Update all subscriptions” may succeed for some groups and fail for others, so check each group rather than relying on the final notification.
- Use clear group names: Describe the group's purpose; don't put the full subscription URL or token in its notes.
- Check that the group is enabled: Make sure the target group isn't disabled and that its auto-update setting was saved.
- Clear filters temporarily: If no nodes appear after an update, check whether a search term or group filter is hiding the results.
- Check the node count: A change in the number of nodes may be due to server-side removals, deduplication, or filtering; inspect the response to find out.
- Select a node again: An update may change the node entries. Confirm the active node is still valid, then test the connection.
A desktop client cannot keep running scheduled tasks while the computer is asleep, the app is closed, or the network is disconnected. Whether it runs a missed update immediately after waking depends on the version. When you need an update, refresh the target group manually and check the actual timestamp in the log rather than relying on the interval setting alone.
Subscription Updated Successfully, but Why Can't the Nodes Connect?
Can Auto-Updates Reset Routing Rules?
What Information Should I Send My Provider?
After troubleshooting, verify at least three things: the target group updates manually, the active node works, and the auto-update setting is saved. To confirm the whole process, leave the app running with a working network and check the log after the next scheduled update.