Hi, I am attempting to test our in-house developed SharePoint 2010 web parts in SharePoint 2013.
The web parts deploy successfully, but when a LINQ to SQL call is made to an SQL Server database in the same domain, the attempt fails due to the NT Authority\Anonymous account not having permissions on the database.
The same web parts work correctly with pass-through authentication under SharePoint 2010 using NTLM authentication from a browser on the local machine or using Kerberos from a remote client.
I have set up an SPN and delegation for the App Pool service account on the SharePoint 2013 and tickets are being granted correctly but this hasn't helped.
I'm assuming at this stage that the problem is to with Claims-based Authentication being the default for web apps on 2013 but am unclear how to proceed, can anyone assist?