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2257886 - ITS Up/Down: Error message during download via WEBGUI


During download a file via SAP GUI for HTML the following error message appears:

  1. The page at <host>:<port> says: Error: NOT_FOUND_ERR
    Error: NOT_FOUND_ERR 

  2. Error: Frontend Service Method: Query file or directory "C:\<file name>".
    The path "C:\<file name>" contains forbidden characters or has an invalid format.
    (Absolute paths must start with Z: or z: for Windows, and with /Z for other systems.)
    Information Dialog

After clicking on the OK button, the Error writing file message appears. Double-clicking on the error text, the error message number FES016 can be seen as well:

Error writing file



  • SAP NetWeaver
  • SAP GUI for HTML (webgui service)
  • Internet Transaction Server (ITS)
  • In case of below kernel versions, if the applet-free frontend service implementation has been activated:
    • SAP Kernel Release 722 from patch 19 up to 129
    • SAP Kernel Release 742 from patch 311 and higher
    • SAP Kernel Release 745 from patch 25 up to 117
    • SAP Kernel Release 746 from patch 12 and higher
  • In case of below kernel version by default:
    • SAP Kernel Release 722 patch 130 and higher
    • SAP Kernel Release 745 patch 118 and higher
    • SAP Kernel Release 749 and higher


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


FES 016 , NWBC , NetWeaver Business Client , Enterprise Portal, Fehler beim Schreiben der Datei, Fehler: Frontend-Service-Methode: Datei oder Verzeichnis "C:\test.txt" abrufen. Der Pfad "C:\test.txt" enthält unzulässige Zeichen oder hat ein ungültiges Format. (Absolute Pfade müssen mit Z: oder z: (Windows) und mit /Z (andere Systeme) beginnen.), Internet Explorer, IE, Mozilla Firefox, FF, Apple Safari, Google Chrome , KBA , is too long, , ~webgui_updown_noapplet_mode , BC-FES-ITS , SAP Internet Transaction Server , BC-FES-WGU , SAP GUI for HTML , Problem

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