André Krijnen

Kerberos

Kerberos, Reporting Services and SharePoint Integrated http 401: Unauthorized

by on Apr.06, 2011, under Active directory, Kerberos, Reporting Services, SharePoint 2010

When it comes to Reporting Services integrated with SharePoint it is difficult to solve problems when you don’t know where to start. Alot of people having issues when solving problems, or configuring Kerberos that way that Windows Integrated security is working properly.

At my work I’ve been at different customers, and still having some problems when it comes to Kerberos, why? Because every environment is different, every server is different, and when it comes to Reporting Services integrated with SharePoint it is some times a hell to fix issues.

So I’ve done multiple integrations with Reporting Services and SharePoint, and yet I know alot about Kerberos. Setting up delegations between App Pools and SSRS, SSRS and SSAS, SSAS and MSSQL, SSRS and MSSQL.

So I’ve ran last monday in a problem with SharePoint and Reporting Services, and why I did I ran into it? Simply, not every environment is configured properly when it comes to DNS, AD, etc.

So I’ve used Fiddler, DelegConfig v1, DelegConfig v2 Beta, ProcessMonitor, but yet I couldn’t figure it out. Even with HTTP streaming, etc I couldn’t see any information. The only thing I could see that was every time I tried I was succesfully logon.

Everytime I get with the integration was the following error: The request failed with HTTP status 401: Unauthorized

Probably everyone that has configured SSRS with SharePoint has seen this error in his life, right? Well If you hit google or bing for it, it will always show Reporting Services Add-In SharePoint. Yes, this is the one everyone is talking about.

Well I used all the tooling a SharePoint dude has to know. But yet I didn’t receive any request on the server running SSRS, and you know why? Because somebody forget to add the http:///ReportServer to the Intranet list. Yet, I added the server to the Intranet list, it solved the problem. Do not add it to the Trusted Sites, because It won’t do anything.

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