Comments on: The data connection uses Windows Authentication and user credentials could not be delegated

By: SP10

SP10 — Tue, 13 Dec 2011 06:05:41 +0000

I did start Claims to Windows Service Token.
But that did not fix the issue.

Any ideas?

By: Michael Bihler

Michael Bihler — Fri, 07 Oct 2011 18:09:08 +0000

I had the problem that for all users access to the service c2wts was denied.

What resolved the problem in my configuration:

One allowed caller was missing c2wtshost.exe.config (Folder: C:\Program Files\Windows Identity Foundation\v3.5).

Adding this entry to the section allowedCallers did the job:

add value=”WSS_WPG”

I restarted the service: And voila: Refreshing the excel worksheet worked like a charm!

By: Daniel

Daniel — Thu, 06 Oct 2011 18:38:01 +0000

What account is the Claims to Windows Token Service running as? …did the trick. Thanks!

By: James

James — Wed, 20 Jul 2011 09:16:17 +0000

I’m getting this error for only one of my reports. I’ve set up a scheduled data refresh which runs successfully. The error occurs when I open the report from Sharepoint in the browser. The report will still appear once I’ve clicked on ok but clicking on a slicer will cause the error message to reappear.

All other reports are functioning correctly using the same credentials etc…

When I look at the Analysis services databases I can see:

Broken_Report Sandbox 2105155e-688a-43c8-9a1f-b9be00721524

Where as all the reports that are working appear as:

Working Report Process 5b271bcb-d170-4c48-b634-f94c94d9367b

Not sure how relevant that is but it might be.

By: Lee

Lee — Tue, 28 Jun 2011 00:36:55 +0000

Hi Arthur,
So you have a couple of users who are not getting the error and everyone else is getting the error. I have seen this before. I recommend looking at the code I posted here: http://powerpivotgeek.com/2010/05/21/testing-the-claims-to-windows-token-service-for-different-identities/. There is a link to it in this article but you might have missed it. What you are seeing, in the past, has been due to the fact that certain users have UPNs in your AD installation and some do not. This might be because of an upgrade issue or something else, but it can be fixed. Try out the test code and use the upns for the users for whom it works and for whom it doesn’t and then you can get a very isolated repro which MS support can help you debug … you will need someone to look at your AD configuration. Let me know if that helps

Lee

By: Arthur Jenkins

Arthur Jenkins — Mon, 27 Jun 2011 00:39:12 +0000

Hello. We have two users who are not getting the “date connection uses Windows authentication…” message. They can see the current data from the most recent refresh. But everyone else that we have tried to add to our SharePoint site is getting the error message. They can then open the workbook in SharePoint but the data has not refreshed (it shows the same data that existed when the workbook was published). We have given them the same rights as the users who are not getting the error message. We have an open support incident with Microsoft but they have not been able to help us resolve this. Any ideas? I will pay someone to help me fix this.

Regards

By: bmm6o

bmm6o — Thu, 02 Jun 2011 18:10:24 +0000

The KB article about the dependency is here: http://support.microsoft.com/kb/2512597

By: jennifer

jennifer — Thu, 31 Mar 2011 06:54:56 +0000

Hi PowerPivotGeek,

Thanks for your quick reply. Yea its a stand alone server And i am required to click on slicers so i will install Power pivot as suggested by you but the user account what i am using is Local account will it create any impact.There is no domain account . Please let me know

thanks in advance

By: powerpivotgeek

powerpivotgeek — Wed, 30 Mar 2011 16:35:14 +0000

Hi Jennifer:
Is your machine a single, all-on-one server? Or is this a multi-machine farm?

Whether or not you need PowerPivot installed depends on that kind of pivot table it is.
If it is pointing to a standalone Analysis Services server, then you do not need PowerPivot installed.
If the workbook has been created with the PowerPivot Excel add-in, and you are clicking on slicers and issuing queries, then Yes, you do need PowerPivot for SharePoint installed. If you are not clicking on a slicer and is just viewing the pivot table as it was last saved in Excel (i.e. you are not interactively going to work with the pivot table), then Excel Services is fine — whatever was last displayed in the visible cells is saved by Excel and Excel Services can render it without any additional components. However, as I said, if you are clicking on a slicer or issuing queries, then you need PowerPivot for SharePoint.

Hope that helps.

_-_-_ Dave

By: jennifer

jennifer — Wed, 30 Mar 2011 12:47:13 +0000

Hi,

I am getting the below when i try to expand a pivot table. “an error occurred during an attempt to establish a connection to external datasource”

The user account using which i try to browse is not domain account. It is a local account. Can you please tell me workaround for that. Also powerpivot is not installed in the server. Is it mandatory. Sorry i am new to excel so i am not sure. Please kindly help