SAP Knowledge Base Article - Preview

2671937 - WDA: "Back-end session was closed after timeout" during Excel file download inside Portal in IE11


After downloading an Excel file in a Web Dynpro ABAP application inside Portal on IE11, when interacting with the application again, the following message is raised:

"Back-end session was closed after timeout. Your session has expired."

Observation: the issue does not happen outside of Portal, or in other browsers. It also does not happen when downloading other file extensions, only Excel spreadsheets.



  • Web Dynpro for ABAP
  • Enterprise Portal
  • Internet Explorer 11
  • SAP NetWeaver 7.5
  • SAP NetWeaver Application Server 7.51 for SAP S/4HANA 1610 (SAP_UI 7.51)
  • SAP NetWeaver Application Server for ABAP 7.52 for SAP S/4HANA (SAP_UI 7.52)
  • ABAP PLATFORM 1809 - Application Server ABAP (SAP_UI 7.53)


ABAP platform 1809 ; SAP NetWeaver 7.5 ; SAP NetWeaver Application Server for ABAP 7.51 innovation package ; SAP NetWeaver Application Server for ABAP 7.52


Web Dynpro, Webdynpro, Web Dynpro ABAP, WDA, WDA_GDPR, Reconciliation Report, excel, xls, xlsx, FLP, Fiori app, time-out, timeout, time out, session expired, IE11, download, downloading, Herunterladen, spreadsheet, Excel, Kalkulationstabelle , KBA , BC-WD-ABA , Web Dynpro ABAP , BC-CST-WDP , Web Dispatcher , BC-WD-ABA-REN , Rendering , BC-WD-ABA-RUN , Web Dynpro ABAP Runtime , BC-WD-ABA-CFG , Configuration / Personalization , BC-WD-ABA-GEN , Generation , Problem

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