Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

We have a Intranet Farm with two load balanced front end servers and a separate database, Report server is installed on box 1, so enysys data extenstions can access the sharepoint DOM.

IIS-BOX 1 + Report Server


SQL Server

The problem is RS fails if the user is accessing box 2, through the load balancer. If we remove Box 2 from the LB - then RS works. Put it back and it intermittently fails.

Anybody got any idea if this topology should work and how to resolve the problem?

share|improve this question
I working this problem through - we think it is caused by RS integrated mode not working with NTLM authorization. Box 2 cannot connect to the RS on behalf of the user. Switching to Negotiate and ensuring Kerberos Authorization can take place should solve this. – Adrian Jun 15 '09 at 8:46
up vote 1 down vote accepted

We needed to configure the iis server to use Kerberos Authentication

see this question for more details

share|improve this answer

On Box 2 are you trying to access reports that are local or load them remotely from box 1? If you are accessing them remotely from Box 1 how are you referencing it?

Also does Reporting Services work on Box 1 when accessed from the load balancer?

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.