SQL Reporting Services 401 Error
Date Published: 09 February 2007
If you just installed SQL Server Reporting Services and you are getting a 401.1 Unauthorized error when you try to go to the http://localhost/reports this post may help. I ran into this and was having a heck of a time figuring it out, since I assumed that since my Reporting Services Configuration Tool was all GREEN that I was good to go. Not so.
In my searching I eventually found this post which led me to my old friend, a KB articleI’d already found once a week ago when fighting with Reporting Services on Vista. My search also yielded this (more of the same).
I never did get RS working on Vista so tonight’s task was to get it working on a from-scratch XP Pro install. After installing XP (and IIS 5.1) and all patches I installed SQL 2005 and SQL Reporting Services, I went through the Configuration Manager and got it all green. Finally, I fired up localhost/Reports. It prompted me for a windows login. I gave it mine. Three times. Then it shows me the 401.1 error.
Method 1: Disable the loopback check
Follow these steps:
|1.||Click Start, click Run, type regedit, and then click OK.|
|2.||In Registry Editor, locate and then click the following registry key:|
|3.||Right-click Lsa, point to New, and then click DWORD Value.|
|4.||Type DisableLoopbackCheck, and then press ENTER.|
|5.||Right-click DisableLoopbackCheck, and then click Modify.|
|6.||In the Value data box, type 1, and then click OK.|
Steve is an experienced software architect and trainer, focusing currently on ASP.NET Core and Domain-Driven Design.