Common V2Ray Questions and Practical Answers
Browse by basics, installation and configuration, usage tips, or troubleshooting. Confirm the platform and client first, then check the subscription, proxy mode, permissions, network, and logs.
Choosing a Client, Core, and Package
Start by distinguishing the client’s purpose, device platform, and processor architecture. Use the subscription or server configuration as the source of truth for protocol parameters.
What are V2Ray, v2rayN, v2rayNG, and v2flyNG?
V2Ray generally refers to the protocols, configuration formats, and core ecosystem associated with Project V, rather than a single graphical client. v2rayN is a desktop client for Windows, macOS, and Linux; v2rayNG is an Android client built on the Xray core; and v2flyNG is an alternative Android client built on the V2Fly core. If you already have a subscription, choose a client for your device platform first, then import the subscription URL provided by your service provider.
Which client should I choose for desktop and Android devices?
Windows, macOS, and Linux users typically choose v2rayN, then select an installer based on the operating system and processor architecture. Android users should generally choose v2rayNG; choose v2flyNG when you need the V2Fly core. The client reads configuration and establishes connections, but does not automatically generate usable server details, so prepare a subscription URL or complete single-node configuration before first launch.
How should I choose between VMess, VLESS, Trojan, and Shadowsocks?
The protocol type must match the server configuration; it cannot be switched simply by renaming it in the client. If your subscription has already generated nodes, use the protocol, port, transport, and security parameters supplied by the subscription. For manual entry, verify the address, port, user ID, transport layer, and TLS settings one by one. Connection quality depends more on server status, network path, and configuration completeness than on the protocol name, so most users do not need to judge speed by protocol.
How do I choose between arm64 and universal Android packages?
Most mainstream Android phones and tablets released after 2015 use arm64, so start with the arm64 package, which is usually smaller. Choose the universal version if you cannot confirm the processor architecture, have an older device, or cannot install the arm64 package. Both packages provide essentially the same features; the difference is the range of processor architectures included, and you do not need to install both.
Subscriptions, System Proxy, and TUN Permissions
If importing fails, check the URL source first. If traffic is not being intercepted, check the system proxy or TUN permissions.
Why does importing fail after I copy the subscription link?
First make sure you copied the complete subscription URL, not the subscription management page, sharing instructions, or a single node name. Check that the beginning, parameters, and final characters were not truncated, and remove spaces and line breaks around the URL. Then add the URL under the client's subscription group and update it. If the response says unauthorized, the URL has expired, or the content is empty, confirm the link status with the subscription provider; importing it again will not fix a server-side response.
What should I do if a subscription update fails or the node list does not change?
First confirm that you are updating the subscription group currently in use, and check whether it has name filters, exclusion rules, or quantity limits enabled. Temporarily disable filtering and update again to see whether the rules were hiding new nodes. If the client reports a timeout, switch networks and retry; if it reports unauthorized or returns empty content, verify the subscription expiry and URL. After the update, select a node again because the previous active configuration is not always replaced automatically.
v2rayN is running, but why is the system proxy not working?
First select a configuration in v2rayN and start the core, then check whether the system proxy menu is set to automatic configuration or global mode. Open the operating system's proxy settings and confirm that the address points to the local machine and that the port matches v2rayN's current listening port. If the browser uses a separate proxy extension, disable conflicting rules or make it follow the system settings. After changing the port, configure the system proxy again and restart applications that still retain old connections.
How do I handle insufficient permissions when enabling TUN mode?
TUN mode creates a virtual network interface and modifies system routes, so it requires the network-management permissions allowed by the operating system. On desktop systems, fully exit the client first, then relaunch it with administrator privileges as required by the system; on Android, confirm that the client is allowed to establish a VPN connection. If other virtual networking tools are active, disconnect them before enabling TUN. If it still fails after permissions are confirmed, restart the device to clear unreleased virtual interfaces.
Proxy Modes, Speed Tests, and Configuration Maintenance
Use speed tests only as a screening reference. Reload the configuration after routing changes, and save subscriptions and custom settings separately before moving to another device.
What is the difference between rule, global, and direct modes?
Rule mode determines where connections go based on domains, IP addresses, processes, or predefined rules, making it suitable for everyday use. Global mode sends more connections through the current proxy node and is useful for checking whether rules are missing a match. Direct mode accesses the network without the proxy and can help determine whether the proxy path is causing the problem. After switching modes, reopen the target page for testing because browsers and apps may continue reusing connections established before the switch.
How should I interpret V2Ray node speed-test results?
Latency tests mainly measure the round-trip time of a probe request and do not fully represent download speed, stability, or access quality for the target website. A failed test may also result from a node blocking probes, packet loss on the current network, or an unreachable test address. When choosing a node, first remove entries that consistently time out, then test the remaining candidates with a real connection. Repeated tests in quick succession are easily affected by network fluctuations, so test at intervals and consider actual page-loading results.
Why did my routing-rule changes not take effect immediately?
Routing rules are usually read when the configuration is loaded or the core starts, so saving the file does not necessarily reload them automatically. After making changes, save the configuration, then reload the current configuration or restart the core. When checking rule order, remember that an earlier match may prevent later rules from running; domain, IP, and process rules may also be evaluated at different stages. Close existing connections in the target app before testing so its connection pool does not continue using the old route.
How do I back up my subscription and client settings?
Prefer the client's configuration export, backup, or data-directory features, and separately record the subscription group names, routing rules, and local port settings. When moving to a new device, establish the basic settings in the new client first, import the subscription next, and restore custom routes last so incompatible settings are easier to identify. A subscription URL is an access credential and should not be placed in public documents, screenshots, or publicly synchronized folders. After restoring everything, manually update the subscription once and select the active node again.
Timeouts, Network Loss, Port Conflicts, and Background Disconnects
First determine whether the issue affects one node, one network, or one device, then read the first clear error in the client log.
What troubleshooting order should I follow when a node keeps timing out?
First switch to another node in the same subscription to determine whether the issue affects one node or the entire subscription. Then switch between Wi-Fi and mobile data to see whether the current network path is involved. Next verify the device time, node address, port, user ID, transport, and TLS parameters. If every node times out, update the subscription again and check the first error in the client log. Change only one variable before testing again so the cause remains identifiable.
The client says it is connected, but webpages will not open. What should I do?
First use direct mode to confirm that the local network itself works, then restore the proxy and check whether the current node can establish an outbound connection. On desktop, verify the system proxy address and port; on Android, confirm that the system VPN indicator is still present. If domains fail but a known IP address responds directly, focus on DNS settings. If every connection fails, check the log for handshake, certificate, timeout, or routing errors and address the first error listed.
How do I fix a port conflict when starting the core?
A port conflict means another process is already listening on the local port the client is trying to use. First check whether v2rayN, an older client, or another proxy tool was launched twice, and fully exit any redundant processes. If the core still will not start, change the local HTTP, SOCKS, or API port in the client settings, then configure the system proxy again. Do not assign the same port to different functions, and update browsers or apps that depend on the port after changing it.
Why does the Android client frequently disconnect in the background?
First allow v2rayNG or v2flyNG to run in the background, then remove strict battery-saving restrictions for the client in the system battery settings. Some devices also require permission for auto-start, background network access, and continued operation after the screen is locked. In the client, reduce unnecessary per-app proxy coverage and avoid running multiple VPN-type tools at the same time. After changing these settings, lock the screen for several minutes and check whether the connection indicator remains visible in the status bar.