Report Builder 401 Errors since SP1

I have been accessing SSRS and Report Builder on a SQL 2005 from the
Internet successfully for some time now but today I am receiving 401 errors
when I try to launch Report Builder. The details show a 401 error
"Unauthorized". This all worked fine until I installed SQL 2005 SP1.
Has anybody run into this before or any suggestions. I can still run saved
reports just fine, it is only the launch of Report Builder that fails.
Thanks, MikeWe got this from Report Manager after we installed Microsoft Windows
Server 2003 Service Pack 1 (SP1).
http://support.microsoft.com/Default.aspx?kbid=896861 solved our
problem.
Neil
Mike Morisoli wrote:
> I have been accessing SSRS and Report Builder on a SQL 2005 from the
> Internet successfully for some time now but today I am receiving 401 errors
> when I try to launch Report Builder. The details show a 401 error
> "Unauthorized". This all worked fine until I installed SQL 2005 SP1.
>
>
> Has anybody run into this before or any suggestions. I can still run saved
> reports just fine, it is only the launch of Report Builder that fails.
>
>
> Thanks, Mike