SAP Knowledge Base Article - Public

1494929 - Database Connectivity issues and errors with Crystal Reports in Visual Studio .NET Applications


  • The following is a partial list of possible errors and issues when connecting Crystal Reports to a datasource in a VS .NET application
    • “Unknown Database Connector Error. Error in File C:\WINDOWS\TEMP\Report1003 {guid ...}.rpt: Unknown Database Connector Error CrystalReportViewer - CrystalReportViewer1 Error: Object reference not set to an instance of an object.”
    • “Failed to load database error. Error in file myReport C:\DOCUME~1\DMTEST\ASPNET\LOCALS~1\Temp\test {guid ...}.rpt”
    • “Database vendor code xxx”
    • And more
  • How best to troubleshoot these?


See the article Troubleshooting Guide to Database Connectivity Issues with Crystal Reports in Visual Studio .NET Applications


KBA , BI-DEV-NET , BI Software Development Kits (SDKs) - .NET or Other , Problem


Crystal Reports 2008 V1 ; SAP Crystal Reports XI R2