Service Broker 已在 MSDB 中禁用，或者 MSDB 无法启动。无法传递服务器级别的事件通知。其他数据库中的 FAN_IN 事件通知可能也会受到影响。

Service Broker is disabled in MSDB or MSDB failed to start. Server level event notifications can not be delivered. Event notifications with FAN_IN in other databases could be affected as well.