Sql server 2008 r2 自定义表单身份验证报告服务2008 r2

我已经为sql Server 2008 r2实现了示例表单身份验证。。我能够创建用户，当我与表中的数据库用户一起登录时，我收到了这个错误

有人能帮忙吗

ui!ReportManager_0-1!13bc!10/04/2011-12:15:33:: e ERROR: Microsoft.ReportingServices.UI.FolderPage+InsufficientPermissionsToRoot: User '' does not have required permissions. Verify that sufficient permissions have been granted and Windows User Account Control (UAC) restrictions have been addressed.
   at Microsoft.ReportingServices.UI.FolderPage.Page_Init(Object sender, EventArgs e)
   at System.EventHandler.Invoke(Object sender, EventArgs e)
   at System.Web.UI.Control.OnInit(EventArgs e)
   at System.Web.UI.Page.OnInit(EventArgs e)
   at System.Web.UI.Control.InitRecursive(Control namingContainer)
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
library!ReportServer_0-2!1ec4!10/04/2011-12:15:33:: Call to GetSystemPermissionsAction().
ui!ReportManager_0-1!13bc!10/04/2011-12:15:33:: e ERROR: HTTP status code --> 500
-------Details--------
Microsoft.ReportingServices.UI.FolderPage+InsufficientPermissionsToRoot: User '' does not have required permissions. Verify that sufficient permissions have been granted and Windows User Account Control (UAC) restrictions have been addressed.

   at Microsoft.ReportingServices.UI.FolderPage.Page_Init(Object sender, EventArgs e)

   at System.EventHandler.Invoke(Object sender, EventArgs e)

   at System.Web.UI.Control.OnInit(EventArgs e)

   at System.Web.UI.Page.OnInit(EventArgs e)

   at System.Web.UI.Control.InitRecursive(Control namingContainer)

   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
library!ReportServer_0-2!1ec4!10/04/2011-12:15:33:: Call to GetSystemPropertiesAction().
ui!ReportManager_0-1!13bc!10/04/2011-12:15:33:: e ERROR: System.Threading.ThreadAbortException: Thread was being aborted.
   at System.Threading.Thread.AbortInternal()
   at System.Threading.Thread.Abort(Object stateInfo)
   at System.Web.HttpResponse.End()
   at System.Web.HttpServerUtility.Transfer(String path, Boolean preserveForm)
   at Microsoft.ReportingServices.UI.ReportingPage.ShowErrorPage(String errMsg)

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看起来是权限问题。我将关注用于服务的用户以及访问数据库。也许您已将其设置为匿名连接？

谢谢您的更新。在表单身份验证中，我注册用户，然后登录该用户。例如，名称为“xxxx”，可以访问站点管理器和某些报告。有普通用户和管理员用户。普通用户可以访问某些报告。。。当我用普通用户登录时，它给了我上述错误。匿名连接到数据库请你给我一步一步的指导…请