if err == nil {
			return newCfg, nil
		}

		// Read older `.minio.sys/config/config.json`, if not
		// possible just fail.
		if err = json.Unmarshal(data, cfg); err != nil {
			// Unable to parse old JSON simply re-initialize a new one.
			return newServerCfg()
		}
	}

	if !globalCredViaEnv && cfg.Credential.IsValid() {
		// Preserve older credential if we do not have