Windows8 无法搜索新更新 错误代码80240440

win8的系统，购于今年五一，在六月份将“电脑恢复到出厂状态并重新安装windows”后，就一直无法连接windows update，错误代码也一直是80240440.

同时“应用商店”也连接不上，SmartScreen筛选器也连接不上。

以下为截图

以下为日志

**-** <Event xmlns="**http://schemas.microsoft.com/win/2004/08/events/event**">

**-** <System>

<Provider Name="Microsoft-Windows-WindowsUpdateClient" Guid="{945A8954-C147-4ACD-923F-40C45405A658}" />

<EventID>25</EventID>

<Version>1</Version>

<Level>2</Level>

<Task>1</Task>

<Opcode>11</Opcode>

<Keywords>0x4000000000000022</Keywords>

<TimeCreated SystemTime="2013-09-06T07:59:45.816460900Z" />

<EventRecordID>37</EventRecordID>

<Correlation />

<Execution ProcessID="1524" ThreadID="448" />

<Channel>Microsoft-Windows-WindowsUpdateClient/Operational</Channel>

<Computer>Lenovo-PC</Computer>

<Security UserID="S-1-5-18" />

</System>

**-** <EventData>

<Data Name="errorCode">0x80240440</Data>

<Data Name="serviceGuid">{7971F918-A847-4430-9279-4A52D1EFE18D}</Data>

</EventData>

</Event>