Hello! I created a report for TFS2010 using Report Builder 2 and it is running against the Reporting Services of a SQL Server 2008 installation. When I use the report in my small VM deployment, everything works fine. It draws a burn up chart on one single page (no multiple pages). If I deploy it to a large environment (multiple servers) from time to time it may happens, that the following error message occurs: Error during Clientrendering. Error during Report Processing. An error occurred within the report server database. This may be due to a connection failure, timeout or low disk condition within the database. To get further error informations, navigate to the report server on your local server computer or activate remote errors. I talked to the admin of the big environment and he told me, that it was a blocking lock in the ReportServer DB. He had to quit that blocking process to get it working again. How can this happen? What should I do? Thanks. Greetings Wolf-Dieter Hofmann Wolfi

Hi, The error message is very general. You need to look into the report server logs to see its detailed log about this issue. The log is stored at C:\Program Files\Microsoft SQL Server\MSRS10.SQLSERVER\Reporting Services\LogFiles within default installation. Additionally, check http://social.msdn.microsoft.com/Forums/en-US/sqlreportingservices/thread/16ab74d1-c68b-477e-8675-4cf165d78df2/ with the same error message. In the link, suggest to assign the Services Account full permissions to do the upgrade.Then, please use the Reporting Services Configuration Manager to re-configure the database again, and restore the encryption key. thanks, Jerry