Symptoms
Assume that you have a report that connects to a SharePoint External list, and then you set up a Microsoft SQL Server 2012 or 2016 Reporting Services (SSRS) subscription for the report. In this situation, the subscription fails to run, and you receive the following error message:
Microsoft.ReportingServices.ReportProcessing.ReportProcessingException: Query execution failed for dataset 'DatasetName'. ---> Microsoft.BusinessData.Infrastructure.BdcException: The shim execution failed unexpectedly - Proxy creation failed. Default context not found.
Cause
This issue occurs because the SPServiceContext or SPServiceContextScope object is never created.
Resolution
This issue is fixed in the following cumulative updates for SQL Server:
Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server:
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
References
Learn about the terminologythat Microsoft uses to describe software updates.