I am running SSRS in SharePoint Integrated Mode and just recently started receiving the following error message when viewing a long-running report:
Sys.WebForms.PageRequestManagerServerErrorException: An unknown error occurred while processing the request on the server. The status code returned from the server was: 12019
This report typically runs in 2 - 5 minutes.
The ULS Logs report the following:
- RunningJobContext.IsClientConnected; found orphaned request tuwr4urvgpx4ad45s5lmaz55
- DataPrefetch abort handler called for Report with ID=. Aborting data sources
- Throwing Microsoft.ReportingServices.ReportProcessing.ProcessingAbortedException: , Microsoft.ReportingServices.ReportProcessing.ProcessingAbortedException: Report processing has been canceled by the user. ;
- Data set 'DataSetName': Report processing has been aborted.
The reports will load fine within SQL Server Data Tools 2012.
Version Info: SharePoint 2010 Enterprise and SQL Server 2012 Enterprise (Reporting Services)
I found a workaround that will allow the report to run if I change the URL to https://. It almost appears that there is a different timeout for SSL vs. Non-SSL report requests.