v2rayN Avalonia vs. WPF: System Requirements and Version Comparison

1. Avalonia vs. WPF: The UI and proxy core are separate

WPF is a desktop UI framework for Windows. The v2rayN WPF edition follows familiar Windows desktop conventions and suits users who already have an established workflow on that OS. Avalonia is a cross-platform UI framework. The v2rayN Avalonia desktop edition supports Windows, macOS, and Linux, but each platform still requires its own compatible package.

v2rayN manages nodes, subscription updates, routing options, and proxy core processes; the selected proxy core handles the actual connection. VMess and VLESS are protocols, while Avalonia and WPF are UI technologies. Changing the UI framework will not turn a VMess node into VLESS or add transport or security settings to the server.

2. System requirements: Check the OS, architecture, and runtime

“Supports Windows” does not mean it supports every older Windows release. Minimum OS versions, required .NET versions, and proxy core compatibility can change between releases. Check the documentation for the version you plan to install. Do not assume that a WPF release that worked before will start the latest desktop package.

1. Check your OS version. On Windows, press Win + R, enter winver, and press Enter. On macOS, open About This Mac. On Linux, check the command output below. Note the full version, not just the OS name.
2. Identify your CPU architecture. On Windows, go to Settings → System → About and check System type. On Linux or macOS, run uname -m. Common output x86_64 corresponds to x64; aarch64 or arm64 corresponds to ARM64.
3. Check the package type. Framework-dependent packages require the appropriate runtime. Self-contained packages usually include the .NET runtime needed by the app, but may still depend on native system libraries. Follow the package documentation; file size alone is not a reliable guide.
4. Keep the exact startup error. If a runtime or native library is missing, or the architecture does not match, resolve that dependency first. Startup issues are unrelated to subscription URLs or node passwords.

# Linux: check the distribution and architecture
cat /etc/os-release
uname -m

# If the dotnet command is installed: list runtimes
dotnet --list-runtimes

Framework-dependent WPF packages usually require the corresponding .NET Desktop Runtime, not just the standard .NET Runtime. Do not apply WPF desktop runtime requirements to Avalonia packages. If the documentation specifies .NET 8, check for a compatible 8.x runtime; having a different major version may not be enough. This is a way to verify requirements, not a claim that every v2rayN release uses .NET 8.

• Windows: Extract the entire archive before running the program. Dragging out just the executable from the archive can leave required resources or proxy core files behind.
• macOS: Choose a package that matches your processor. If macOS displays a security warning, verify the source and follow the available security settings. Do not disable system-wide security protections.
• Linux: Check your distribution, desktop session, and package format. Whether a graphical app can open a window also depends on the desktop environment and native libraries, not just whether .NET is installed.

3. Choosing a version: Cross-platform installs and existing Windows setups

If you need to switch between desktop operating systems, consider the Avalonia desktop edition first. If you use Windows exclusively and your WPF setup already handles subscriptions, routing, and tray controls reliably, staying with it is a reasonable choice. Choose based on your deployment needs—not on claims that one UI framework connects faster.

Compare responsiveness and memory use on your own device. The number of nodes, log refresh rate, display scaling, proxy core processes, and TUN status can all affect what you observe. Looking only at the main window process in Task Manager does not show the total usage of the client and its proxy core. Without testing under the same conditions, there is no sound basis for ranking the two interfaces by performance.

• Use the same node, transport, and routing rules.
• Test each version separately. Close the other one to avoid conflicts over ports and system proxy settings.
• Record window responsiveness, proxy core startup errors, and results when visiting your target site. Distinguish UI issues from connection problems.

4. UI differences: Check subscriptions, system proxy, and TUN separately

Both interfaces focus on nodes, subscriptions, and connection management, but menu layouts, right-click actions, tray controls, and dialog prompts may differ. Use the checks below by feature, and refer to the menu labels in your installed version. Do not overwrite your old configuration just because a button has moved.

System proxy settings mainly serve apps that honor them. TUN routes traffic through a virtual network interface, may require extra permissions, and can affect routing and DNS. Avalonia's cross-platform UI does not remove these OS-specific differences. On Linux, the desktop environment and networking tools can also affect how the settings take effect.

1. Leave TUN off. Start one working node and check the proxy core logs for configuration or listener errors.
2. Test the local endpoint with a request that explicitly specifies a proxy, then enable the system proxy and test in a browser.
3. Enable TUN only if you need to route traffic from other apps. If it fails only at this stage, focus on permissions, the interface, and routes; repeatedly switching UI versions is unlikely to help.

5. Migration checks: Isolate configuration issues with a fixed port

Exit the client before migrating and back up your existing user configuration and subscription details. Internal configuration formats can differ between UI frameworks or releases, so use the version's export, import, or migration tools where available. If compatibility is not clearly documented, import your nodes or add the subscription again, then restore routing and proxy options one at a time.

This minimal test uses the local listen address 127.0.0.1, example port 10808, and HTTPS destination port 443. These are test values, not guaranteed defaults for every release; check Parameter settings for the actual port.

# Use only when SOCKS is listening on 10808
# On Windows, you can use curl.exe
curl --proxy socks5h://127.0.0.1:10808 --connect-timeout 10 --max-time 20 -I https://v2rayruanjian.com/

socks5h sends the destination hostname to the proxy for resolution. If the listener supports only HTTP, use the actual HTTP endpoint instead; changing only the protocol name while keeping the port is not enough. Receiving an HTTP response header means the target responded to this request, but one successful request does not confirm that all routing, DNS, or app traffic is handled correctly.

• Connection refused immediately: Check that the proxy core is running, the port is correct, and a listener is available.
• Port already in use: Exit any other v2rayN instance, confirm the port is free, and test again. Do not let both versions modify the system proxy at the same time.
• Connection timed out: Check node availability, server settings, transport, and security options, then look for the specific error in the logs.
• The command works, but the browser fails: Check the system proxy, the browser's own proxy settings, and any extensions. The issue is likely in how the app connects to the proxy.

6. FAQ: Troubleshooting startup failures and connection differences

Base your final choice on a setup you can verify: the package matches your OS and architecture, runtime requirements are met, subscriptions update, the proxy endpoint connects, and your network settings are restored after exit. Once those conditions are met, choose the interface that best fits how you use its windows, tray controls, and settings.