Monthly Archives: January 2011

Microsoft.ReportingServices.Diagnostics.Utilities.UnknownUserNameException: The user or group name is not recognized.

Problem: Recently our Data Driven Subscriptions started failing with the following error message (as in SSRS Error Logs found in Program Files\Microsoft SQL Server\MSRS10.SqlServer\Logfiles\….). library!WindowsService_0!960!01/07/2011-14:17:59:: e ERROR: Error processing data driven subscription: Microsoft.ReportingServices.Diagnostics.Utilities.UnknownUserNameException: The user or group name ‘<UserName>’  is … Continue reading

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SSRS Data Driven Subscriptions – Queueing Mechanism

When thousands of data driven subscriptions are fired in SSRS, they are stored in ReportServer.dbo.Notifications table. Based on the workload of SSRS Service, subscriptions are picked from this table for processing. This means even if SSRS Server / Windows Service … Continue reading

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