Hi,
I created installers for multiple versions for same Product like installer for following versions.
1) Product 11.1.0.0
2) Product 11.2.0.0
3) Product 11.3.0.0
4) Product 11.4.0.0
Above installers contain UI and Services in it and if I want to install any new version of Product then it asks to uninstall the old version because the Product Code for all the above installer is same.
Now I need separately create UI installer and Services installer (so I feel I can not user the same installer as I was using earlier means same Product Code) and these UI and Service installer can be installed on same machine or different machine. But still want if old version 11.x is available on the machine then it should prompt to uninstall.
I am not getting how to check whether the old version is already installed.
Note:- In old versions installer, I did not maintain any Registry Entry for Product.
Please suggest me if any way is there.
Thanks,
Amit