The report server cannot open a connection to the report server database.
The report server cannot open a connection to the report server database. A connection to the database is required for all requests and processing. (rsReportServerDatabaseUnavailable) This Error throws when we try to access/browse the SSRS Report manager link/URL through Report services configuration manager window. This error due to missing database or data source for the reports.Configure database or report database through eport services configuration manager window(Mentioned/specify data source ,username and password).