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2591756 - Prevent SAP GUI 7.5 installation from removing / deleting Microsoft system files like mscomctl.ocx, mscomct2.ocx, richtx32.ocx etc..


  • While installing SAP GUI 7.5, the installer deletes/removes Microsoft system files like mscomctl.ocx, mscomct2.ocx, richtx32.ocx etc.. from the path c:\windows\system32\ (or c:\windows\SysWow64\ for 64-bit OS) on Windows system
  • For e.g. in the NwSapSetup_*.log you will see below:

NwSapsAtlC 1 Attempting file uninstallation: C:\Windows\system32\mscomctl.ocx

NwSapsAtlC 1 File type: InProc COM server file

NwSapsAtlC 1 Attempting out of process self unregistration (sapregsv.exe)

NwSapFeiUt 1 Executing <C:\Users\<userid>\AppData\Local\Temp\SapC880.tmp\Setup\sapregsv.exe C:\Windows\system32\mscomctl.ocx /u /s /w>

NwSapFeiUt 1 Waiting for 31000 milli-seconds...

NwSapFeiUt 1 Process <C:\Users\<userid>\AppData\Local\Temp\SapC880.tmp\Setup\sapregsv.exe C:\Windows\system32\mscomctl.ocx /u /s /w> has finished.

NwSapFeiUt 1 Process <C:\Users\<userid>\AppData\Local\Temp\SapC880.tmp\Setup\sapregsv.exe C:\Windows\system32\mscomctl.ocx /u /s /w> has the return code 0

NwSapsAtlC 1 COM server out of process self unregistration succeeded

NwSapsAtlC 1 SharedDllCounter for C:\Windows\System32\mscomctl.ocx has been erased

NwSapsAtlC 1 File C:\Windows\System32\mscomctl.ocx has been uninstalled successfully

  • Other applications relying on mscomctl.ocx will stop working
  • Similarly, You can see above logs for other Microsoft system files like mscomct2.ocx, richtx32.ocx etc.. too.



SAP GUI for Windows 7.5


Microsoft Controls, mscomctl.ocx, mscomct2.ocx, richtx32.ocx, GUI 7.5, SharedDLLs, Microsoft system files, .ocx , KBA , BC-FES-INS , Frontend Installation , BC-FES-GUI , Graphical User Interface , Problem

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