How to add a registry key (InstallLocation) that points to the full path to an application’s primary folder


To add a registry key (InstallLocation) that can point to the full path to the application's primary folder


Any application that gets installed using the windows installer engine, stores the ‘full path to the application's primary folder’ as a string value ‘InstallLocation’ under either of these two registry key : 

Key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{product_code}\


Key:  HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\{product_code}

Value of the "InstallLocation" is added by the public property ‘ARPINSTALLLOCATION’ and typically this needs to be set by a custom action. Here is the sample custom action that can be added to the installer project-

Action: SetARPINSTALLLOCATION             

Type: 51                        

Source: ARPINSTALLLOCATION                           


In my case I am adding this custom action using Orca, this is how it looks like:


This action also needs to be added under the Execute sequence after the CostFinalize Action.



Content by: Keshav Deo Jain

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