权限错误SSRS 2016

Question

我刚刚安装了SQL Server 2016 RC2，我运行了报告服务设置，一切顺利。 然而，当我进入网址时，它告诉我"The permissions granted to user 'abc\xyz' are insufficient for performing this operation. (rsAccessDenied)"我是PC上唯一的用户。