连接超时
Cause: Firewall blocking FTP data ports, incorrect passive/active mode, or wrong hostname.
Solution: Run the 网络配置向导 (Edit > 网络配置向导). Set transfer mode to Passive. Verify the hostname resolves correctly and that your firewall allows FileZilla through.
身份验证失败
Cause: Incorrect username, password, or logon type. Using FTP credentials for an SFTP connection or vice versa.
Solution: Double-check credentials with your hosting provider. Ensure the 协议 in Site Manager matches what your server supports. For SFTP with keys, select Key file logon type and point to your private key.
传输失败或卡住
Cause: Unstable network, server connection limits, or file permission issues on the remote server.
Solution: Enable transfer resume in settings. Reduce simultaneous connections in Site Manager Transfer Settings. Check remote file permissions and available disk space on the server.
证书验证失败（FTPS）
Cause: The server's SSL certificate is self-signed, expired, or issued for a different hostname.
Solution: If you trust the server, you can accept the certificate when prompted. For production environments, ensure the server uses a valid certificate from a trusted certificate authority.
Filenames Display as Question Marks or Gibberish
Cause: Character encoding mismatch between client and server.
Solution: In Site Manager, go to the Charset tab and set the character set to UTF-8 or the encoding specified by your server administrator.
来自此 IP 的连接过多
Cause: Exceeding the maximum simultaneous FTP connections allowed by shared hosting.
Solution: In Site Manager Transfer Settings, check Limit number of simultaneous connections and set Maximum to 1 or 2. Close unused tabs connected to the same server.