v2rayN cannot be opened / crashes / startup error solution

Double click v2rayN.exe No response, crash as soon as it pops up, or a series of English errors reported? This is usually not a node issue but Operating environment or File is corrupted. The following four categories of reasons cover most situations.

1Missing .NET runtime (most common)

v2rayN is developed based on .NET, and the normal version installation package Does not come with its own runtime library. If your computer does not have the corresponding .NET desktop runtime installed, there will be no response or a direct crash when you double-click.

• Solution: Go to Microsoft official website to download and install .NET Desktop Runtime (desktop runtime, please note that it is the Desktop version, not the ASP.NET one), after installation, restart the computer and then open v2rayN.
• If you don't want to install another runtime library, download Integrated version that comes with its own runtime library(The file name usually contains SelfContained or desktop), ready to use after unzipping. It is larger in size but avoids environmental problems.

2Antivirus software deleted the kernel

agent core xray.exe / v2ray.exe They are often misjudged as risky programs by security software and immediately isolated. The kernel is gone, and v2rayN cannot find it when it starts, and will report an error or crash.

1. Open the "Quarantine/Trust Zone" of the anti-virus software and delete the deleted xray.exe Recover it.
2. Add the entire v2rayN folder Whitelist/Trust Directory, to avoid being deleted next time.
3. Re-unpack a clean v2rayN overlay.

3Configuration file is corrupted

Abnormal shutdown and forced end of the process may cause the configuration file of v2rayN to guiNConfig.json Damage is manifested as "it was working fine before, but suddenly crashed as soon as it was opened."

• Go to the v2rayN folder and find guiNConfig.json(Some versions are in guiConfigs subdirectory), Rename or delete It will automatically generate a new one when you restart the program.
• Note: This will lose the added nodes and settings. Just re-import the subscription, so remember your subscription address.

4Path and permission issues

• The path contains Chinese or special symbols: Some versions are not friendly to Chinese paths, move v2rayN to D:\v2rayN This pure English path.
• Place it in a protected directory such as Program Files: The program writing configuration will be blocked by the system. Change to a normal directory, or right-click and "Run as administrator".
• WebView2 is missing: A few interface components rely on the WebView2 runtime. Win11 usually comes with it. Older versions of Win10 may require you to manually install Microsoft's WebView2.