SAP Knowledge Base Article - Preview

2438927 - ITS Up/down: Mozilla Firefox 52.0 and higher


The frontend service methods like upload, download, execute, … don't work, when executed with Mozilla Firefox 52.0 or higher.

The following symptoms may occur:

  • never ending loop:

neverending loop.png

  • Java applet does not start:

java applet.png



  • SAP GUI for HTML (Webgui)
  • Internet Transaction Server (ITS)
  • Mozilla Firefox
  • SAP NetWeaver


SAP NetWeaver Application Server for ABAP all versions ; SAP NetWeaver all versions


gui_download, display, upload, download, herunterladen, hochladen, up-/download, anzeigen, Dokument, NWBC, Enterprise Portal, endless loop, freeze, stuck,  NPAPI, File browser, Virtual File System
SAPGUI for HTML applet was not started within 30 seconds, java is not installed or deactivated in the browser, Please wait. You will be forwarded automatically. This page had to be included for technical reasons. (for old kernel and system (Basis 700 with Kernel 721) , KBA , BC-FES-ITS , SAP Internet Transaction Server , BC-FES-WGU , SAP GUI for HTML , Problem

About this page

This is a preview of a SAP Knowledge Base Article. Click more to access the full version on SAP for Me (Login required).

Search for additional results

Visit SAP Support Portal's SAP Notes and KBA Search.