If KuaiLian VPN shows codes such as 101, 202, 303, 404, 505, 1001, 1002, 2001, 2002, or 3002, do not assume the number has a fixed public meaning. Without an official definition, the safer approach is to record the code, where it appeared, and the device/network context.
A copied “VPN error code list” is not the same as official documentation. Codes can vary by app version, region, account state, and network condition.
Record Three Details First
- The full code or wording, such as 101, 1002, or server not responding.
- Where it appears: before login, after authentication, while connecting, or after the tunnel says connected.
- Your device and network: Android, iPhone, Windows, macOS, Wi-Fi, mobile data, work, or campus network.
Judge by Scenario, Not by Number Alone
Code during login or authentication
Check account state, plan status, device time, and network verification. Use the authentication failed guide.
Code after tapping connect
Check base network, app version, system permissions, and current route. Do not assume one route or speed will stay available.
Code after the VPN says connected
This often points to DNS, routing, browser cache, or platform availability. Use the connected but no internet guide.
General Troubleshooting Order
- Disconnect the VPN and test a normal webpage.
- Switch between Wi-Fi and mobile data.
- Use the download page to verify the current source and version.
- Check VPN permission, background permission, firewall, or security software.
- Record the code, screenshot, and time, then use the support route currently shown in the app.
When Reinstalling Makes Sense
If the code appears after an OS update, phone migration, long period without updates, or installation from a third-party mirror, reinstalling from the verified current source is usually better than repeatedly switching routes.