可能我关闭了某服务引起的.
HomeGroupProvider已启动.
HomeGroupListener无法启动.

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Services
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Windows could not start the HomeGroup Listener on Local Computer. For more information, review the System Event Log. If this is a non-Microsoft service, contact the service vendor, and refer to service-specific error code -2147023143.
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OK  
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无法访问别人在共享在家庭组中的文件.

PS.Google出来的删服务又拷注册表的方法试了无效.

答案或建议：

开启防火墙即可启动HomeGroup Listener.切换为其他网络再切换到家庭网络,开启服务.即可..

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