When I released the project to another server IIS, I downloaded the PDF file in the use of crystal reports, but the setDatabaseLogOn (user, PWD); the login database failed.
e.g.
Database logon failed.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Runtime.InteropServices.COMException: Database logon failed.
[COMException (0x8004100f): Database logon failed.]
CrystalDecisions.ReportAppServer.Controllers.ReportSourceClass.Export(ExportOptions pExportOptions, RequestContext pRequestContext) +0
CrystalDecisions.ReportSource.EromReportSourceBase.ExportToStream(ExportRequestContext reqContext) +362
[LogOnException: Database logon failed.]
CrystalDecisions.ReportAppServer.ConvertDotNetToErom.ThrowDotNetException(Exception e) +909
CrystalDecisions.ReportSource.EromReportSourceBase.ExportToStream(ExportRequestContext reqContext) +471
CrystalDecisions.CrystalReports.Engine.FormatEngine.ExportToStream(ExportRequestContext reqContext) +823
CrystalDecisions.CrystalReports.Engine.ReportDocument.ExportToStream(ExportOptions options) +156
CrystalDecisions.CrystalReports.Engine.ReportDocument.ExportToStream(ExportFormatType formatType) +115
WebReportsf.ReportsMembers.PrintReports.CrystalReportsprintPDFhandler(String id, IList`1 lists) in E:DataWorld20151008________webReportsWebReportsfWebReportsfReprtsMembersPrintReprts.aspx.cs:188
WebReportsf.ReportsMembers.PrintReports.Page_Load(Object sender, EventArgs e) in E:DataWorld20151008________webReportsWebReportsfWebReportsfReprtsMembersPrintReprts.aspx.cs:63
System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +25
System.Web.UI.Control.LoadRecursive() +71
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3048
New NetWeaver Information at SAP.com
Very Helpfull
