SSRS Instance Missing from SSRS Configuration Manager

  • I have a SQL Server 2008 DB Engine and 4 RS instances on a machine. When I open the SSRS Configuration Manager only three SSRS instances are in the drop down menu to make a connection to. All four were working as recently as 11/11. When I look at the RS logs for the instance that is missing, nothing sticks out as being the problem. The report Manager URL returns a 404 File or Directory Not Found message.

    Any ideas on what to look for or how to troubleshoot what has happened to this SSRS instance that is no longer working?

  • I found the below in the Windows Application Log.

    Service cannot be started. Microsoft.ReportingServices.Diagnostics.Utilities.ServerConfigurationErrorException: The report server has encountered a configuration error. ---> System.Xml.XmlException: The 'SemanticQuery' start tag on line 210 does not match the end tag of 'Extension'. Line 229, position 6.

    I came across the answer here:

    https://social.msdn.microsoft.com/Forums/sqlserver/en-US/e5a8ab58-1382-4509-8349-a8aab418bd88/ssrs-forms-authenitcation-error?forum=sqlreportingservices

    The issue was that someone had commented out a single line in the config file while trying to address an error related to TERADATA. That left a syntax error in the config file. As soon as I corrected that the SSRS Config Manager again showed the missing instance in the Connection drop down.

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