V2Ray FAQ and Configuration Troubleshooting

Open v2rayNG’s subscription group settings, create a group, and paste the complete subscription URL. Save it, return to the main screen, and run Update subscriptions. When the update finishes, select a node from the relevant group and start the connection. If the list does not change, first confirm that you updated the newly created group. Then check for spaces around the URL, missing parts of the link, and network or parsing errors in the log.

Remove spaces and line breaks from both ends of the link, and make sure you did not copy webpage instructions along with it. Test the URL in a browser to confirm that it returns content, then verify the device date, time, and time zone. If the URL is reachable but the client still fails, check the log to determine whether the problem is a certificate connection failure, an empty response, or an unrecognized content format. Then inspect the network, subscription status, or client version accordingly.

Confirm that you are updating the subscription group currently in use, not another group with the same name. Check whether the subscription URL has expired or lost parameters, and review the response status in the update log. If the server has updated but the local list still shows old content, back up any custom nodes you need, then delete and recreate the subscription group. Never clear the entire configuration without a backup.

Single share links and subscription URLs follow different processing paths. A share link parses one node directly; a subscription URL must first fetch remote content, identify its format, and write multiple nodes in bulk. A working single node only proves that its protocol parameters can be parsed—it does not prove that the subscription endpoint works. Check the subscription URL’s response, content format, access permissions, and subscription parsing errors in the client log.

First confirm in v2rayN that system proxy mode is not disabled. Then open the operating system’s proxy settings and verify that the address points to the local machine and that the port matches the client’s local listening port. If the setting keeps reverting, check whether another proxy tool or management policy is rewriting it. After making changes, reopen the browser and test again, while using the client log to confirm that requests reach the local inbound.

First confirm that the device can access the network and retrieve the subscription. Then check the system time, whether the client core has started, and whether the local port is occupied. Choose any node and inspect its full log to distinguish DNS resolution failures, TCP connection timeouts, TLS handshake failures, and authentication failures. If every node fails at the same stage, investigate the local network, DNS, or client settings before changing nodes one by one.

A connected status only means that the client process or virtual interface is running; it does not prove that the node handshake and traffic forwarding succeeded. Confirm that a specific node is selected, then check whether the system proxy or TUN mode is actually capturing browser traffic. Open a webpage while watching the access log: no new entry means the traffic never reached the client; an entry followed by an outbound failure means you should continue checking the node, routing, and DNS.

The browser may use the system proxy or its own proxy settings, while the target application may ignore the system proxy, use only UDP, or have separate network settings. Check whether the application supports manually entering an HTTP or SOCKS proxy. If more applications need to be captured, consider TUN mode. If there are still no traffic entries after enabling it, check process-based routing rules, virtual-interface routes, and whether the application bypasses the local network stack.

Start by using real connection latency to rule out nodes with unstable handshakes. Then compare several nodes at the same time against the same destination, so fluctuations on the destination site are not mistaken for proxy problems. Check for unnecessary global proxying, overly complex rules, or repeated DNS queries, and watch the log for frequent reconnects. If small files are fine but large files are slow, also consider egress bandwidth, transport parameters, and packet loss on the local network.

Record the first configuration error in the log instead of focusing only on the final exit message. Common causes include an unsupported field for the current core, a port conflict, a routing rule that references a nonexistent tag, or configuration content truncated during copying. Temporarily switch to a known-good basic configuration to verify the client itself, then restore DNS, routing, and advanced transport settings section by section to locate the problematic block.