The error message PC021 "XXL not installed" appears after the user has run the XXL dialog and therefore called the XXL List Viewer.
Cause and prerequisitesThe error message normally occurs before the XXL dialog is passed, for example because a previous check finds that the XXL macros are not installed on the frontend.
If the error message occurs AFTER the XXL dialog has run, this generally means that the installation of Microsoft Excel on the PC is incorrect. The XXL component reads the Windows Registry database on the PC to determine whether Excel is installed, and if so, in which directory. If there are incorrect entries in the Registry, for example, because Excel was manually deleted or moved into another directory after installation, the existence checks succeed initially, and it is only the attempt to start Excel that fails.
A special case is the 32-bit version of the 3.0C SAPGUI. This version contains a bug which makes it impossible to control external OLE Automation servers using this version. Please use the 16-bit- or a more recent 32-bit-version instead, or read note 37980 to find out where to retrieve a corrected 32-bit- / 3.0C version.
Start the Registration Info Editor (Program Manager: File -> Run, "regedit /v") and check whether the key: \ExcelWorksheet\protocol\StdFileEditing\server exists, and ensure that its value is the complete path for the Excel program file (for example, "D:\MSOFFICE\EXCEL5\EXCEL.EXE").
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