Unable to upgrade the Storefront from 7.15 LTSR CU7 to CU8; fails with "An error occurred during installation. Please ensure all the required prerequisites have been installed and run the installer again."

Unable to upgrade the SF from 7.15 LTSR CU7 to CU8; fails with "An error occurred during installation. Please ensure all the required prerequisites have been installed and run the installer again."...

Prerequisite Failure Error When Upgrading from StoreFront 2.6 to 3.0

Prerequisite failure error when upgrading from StoreFront 2.6 to 3.0: An error occurred during installation. Please ensure all the required prerequisites have been installed and run the installer again...