未将对象引用设置到对象的实例 Microsoft.Office.Server.Administration.SqlSessionStateResolver
错误
发生意外错误。
sharepoint网站在本地是一切正常的，不过当在外网链接它的时候，却报以上错误。 错户信息：
Object reference not set to an instance of an object. at Microsoft.Office.Server.Administration.SqlSessionStateResolver.System.Web.IPartitionResolver.ResolvePartition(Object key)
at System.Web.PartitionManager.GetPartition(IPartitionResolver partitionResolver, String id)
at System.Web.SessionState.SqlSessionStateStore.GetConnection(String id, Boolean& usePooling)
at System.Web.SessionState.SqlSessionStateStore.ResetItemTimeout(HttpContext context, String id)
at System.Web.SessionState.SessionStateModule.BeginAcquireState(Object source, EventArgs e, AsyncCallback cb, Object extraData)
at System.Web.HttpApplication.AsyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
解决方法： 管理中心-操作-配置备用访问映射-Extranet配置上IP访问地址即可，http://XXX.XX.XX.XX:端口