Check Windows Registry for active install

BGIdev · 27th May 2020, 14:30

One of the components to be installed in the installation script is a OLE DLL application.

I am trying to search the Windows Registry to determine if there is an active installation already on the workstation. i.e. it shows up in the Programs and Features list of the Programs section in the Control Panel.

However, even after uninstalling the application, the registry entries for the DLL application remain.

I am able to find out of the registry exists in the HKEY_Classes_Root section, using the Registry plug-in.

Any guidance of how to proceed is greatly appreciated.

Anders · 27th May 2020, 14:58

Can you call regsvr32 on the dll to unregister it?

27th May 2020, 14:30	#1
BGIdev Junior Member Join Date: Apr 2020 Posts: 8	Check Windows Registry for active install One of the components to be installed in the installation script is a OLE DLL application. I am trying to search the Windows Registry to determine if there is an active installation already on the workstation. i.e. it shows up in the Programs and Features list of the Programs section in the Control Panel. However, even after uninstalling the application, the registry entries for the DLL application remain. I am able to find out of the registry exists in the HKEY_Classes_Root section, using the Registry plug-in. Any guidance of how to proceed is greatly appreciated.

27th May 2020, 14:58	#2
Anders Moderator Join Date: Jun 2002 Location: ${NSISDIR} Posts: 5,548	Can you call regsvr32 on the dll to unregister it? IntOp $PostCount $PostCount + 1

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