"Earlier version of CA Identity Manager has been detected" error will keep you from installing the product. This will happen if you didn't manually remove Identity Manager's registration in the .com.zerog.registry.xml file.
"Earlier version of CA Identity Manager has been detected" error will keep you from installing the product. Some customers run into this message after manually uninstalling Identity Manager. You might have used the Add/Remove Programs and successfully ran the Identity Manager un-installers. You might have even deleted all remaining files under Program Files\CA\CA Identity Manager. You remove all registry entries and yet can't install the product and are getting this error.
This is because the information that indicates the product is installed is actually located in: "C:\Program Files\Zero G Registry\.com.zerog.registry.xml". It's a hidden file so you might need to turn on the 'Show Hidden Files' option to see it. This file is holding the information about some of CA's products that have been installed. This file would be up to date with the most current version of each of the products that are regsitered.
To find the information about CA Identity Manager you should look for
<product name="CA Identity Manager" ..... ..... ..... ....
This section ends with the next closing tag:
In this section you will find information about the vendor, version and features installed in Identity Manager. So, this tells the installer that CA Identity Manager has not yet been uninstalled.
What you will need to do is the following:
After that you should be able to run the CA Identity Manager installer.