Hi,

I have one child installer which gets installed as part of its parent installer. Some time the child installer can be installed alone. At that time how to verify it from parent installer whether the child is installed or not?. If it is I need to uninstall it and reinstall them. How to do it?

Is 'Detect previous version' function useful?

Note : It is not registered in windows registry. But I know the GUID of both.