Hello,

because this key should not be used to verify that a software is installed.

The correct location (Windows Development Guidelines) to register a product with Windows is HKLM\Software\Microsoft\Windows\CurrentVersion\Uni nstall and HKLM\Software\Wow6432Node\Microsoft\Windows\Curren tVersion\Uninstall. That's the location where Add/Remove Programs gets its information from.

The above HKEY\SOFTWARE\Classes\Installer\Products is for MSI installs and tells only the half truth.

BTW, you can create your own setup entries in this key, but it is NOT recommended.

Friedrich