Top 40 most vulnerable widget - No data to display

There could be a timeout occurring due to the widget being based on 40 nodes, I'd recommend raising a Tech Support ticket so they can analyze debug logs and determine the root cause. As a first port of call, you could edit the widget and change the 'max number of items to display' to 10 and see if that results in the same error:

Good shout but unfortunately the same error as before.

OrionWeb log is showing the following:

2019-08-27 09:47:36,139 [3745] (263) ERROR SolarWinds.Orion.Web.InformationService.InformationServiceProxy - (null)  Invalid column name 'C15'.

System.ServiceModel.FaultException`1[SolarWinds.InformationService.Contract2.InfoServiceFaultContract]: RunQuery failed, check fault information.

Invalid column name 'C15'. (Fault Detail is equal to InfoServiceFaultContract [ System.Data.SqlClient.SqlException (0x80131904): Invalid column name 'C15'.

   at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)

   at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)

   at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)

   at System.Data.SqlClient.SqlDataReader.TryConsumeMetaData()

   at System.Data.SqlClient.SqlDataReader.get_MetaData()

   at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString, Boolean isInternal, Boolean forDescribeParameterEncryption, Boolean shouldCacheForAlwaysEncrypted)

   at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmd...).

Anyone have any ideas?

Something on the last patch caused the issue but after applying the 2019.4 updates the issue was resolved.