Getting installation errors when installing Endpoint Security on OSX

When installing the Endpoint package on a MAC machine, you may encounter the following error:

The issue occurs when the user selects the option to Always trust "iSheriff Inc" certificate when running the Endpoint Security Installer package. A certificate gets added to the Keychain Access which is not recognized by Apple and results in the error above. 

To resolve the issue follow the steps listed below:

Open Keychain Access and view the certificates listed under the login Keychains.

Delete the iSheriff certificate from the keychain.

Run the Endpoint Security installer package again and click continue when prompted with the invalid certificate warning.

The application should now be able to install successfully.